stem
美 [stem] 
英 [stem]
詞形變化
過去式：stemmed 第三人稱單數(shù)：stems 現(xiàn)在分詞：stemming 反義詞
同義詞
英漢雙解
1. | （花草的）莖；（花或葉的）梗，柄the main long thin part of a plant above the ground from which the leaves or flowers grow; a smaller part that grows from this and supports flowers or leaves |
2. | （高腳酒杯的）腳the long thin part of a wine glass between the bowl and the base |
3. | 煙斗柄the thin tube of a tobacco pipe |
4. | 有…莖（或梗）的having one or more stems of the type mentioned |
| a long-stemmed rose 一枝長莖玫瑰 |
5. | 詞干the main part of a word that stays the same when endings are added to it |
| ‘Writ’ is the stem of the forms ‘writes’, ‘writing’ and ‘written’. writ 是 writes、writing 和 written 三個詞的詞干。 |
1. | ~ sth 阻止；封堵；遏止to stop sth that is flowing from spreading or increasing |
| The cut was bandaged to stem the bleeding. 傷口已包扎止血。 |
| They discussed ways of stemming the flow of smuggled drugs. 他們討論了遏制走私毒品流通的辦法。 |
| The government had failed to stem the tide of factory closures. 政府沒有控制住工廠的倒閉潮。 |
習慣用語
from stem to stern
從船頭到船尾all the way from the front of a ship to the back
英漢解釋
v. | 7. 〈美〉起源于,起因于,(由...)發(fā)生,來自 (from out of) |
n. | |
abbr. | 1. (=Scanning transmission electron microscope)掃描透射式電子顯微鏡 |
英英解釋
例句
THE 20S ARE LIKE the stem cell of human development, the pluripotent moment when any of several outcomes is possible.
這些20來歲的人就像是人類發(fā)展當中的干細胞，是不同結(jié)果都有可能發(fā)生的多潛能性時刻。
It would be better to derive human stem cell lines from the body's mature cells, he said, a method that researchers are still working on.
由身體成熟細胞培養(yǎng)為人類胚胎干細胞會是一個更好的辦法，不過研究人員還在努力研究這項技術(shù)。
"So it is going to be interesting to see if prions play any role in demyelinating diseases that stem from the brain, " he says.
“如果小蛋白在腦部的其他疾病中都有影響那就更有趣了”，他說。
Embryonic stem cells are the source of every cell, tissue and organ in the body.
身體中的每一個細胞，組織和器官都來源于胚性干細胞。
In monkeys, the stem might not have bound to cells or might have latched on in a manner that did not trigger a response.
在猴子體內(nèi)，抗體的Fc區(qū)域可能并不會黏附在細胞上，或是即使黏附在細胞上也無法啟動免疫反應。
Spermatogonial stem cells (SSCs) are the only stem cells in the body that transmit genetic information to the next generation.
精原干細胞是機體內(nèi)唯一一個能傳遞遺傳信息至下一代的干細胞。
But a modified approach that does not involve viruses is likely to be the ultimate way of making human stem cells.
一種改良的沒有病毒參與的方法可能是制造人體干細胞的最終方式。
Adipose stem cells have been used in numerous centers for cosmetic and reconstructive applications in humans, March said.
脂肪干細胞已經(jīng)在很多中心被用于人類美容和整形中。
The stem of everyone eager, the sweat bedewed clothes, flow full ZHANG ZHANG's smiling face, hope the whose on the faces is all red all.
大家干得可起勁了，汗水沾濕了衣服，流滿了張張笑臉，望望誰的臉上都是紅通通的。
The allied air strikes against Libya are presenting a new challenge for the Bank of Japan in its efforts to stem the rise of the yen.
多國部隊對利比亞的空中打擊，正在對日本央行（BankofJapan）阻止日圓升值的努力構(gòu)成新的挑戰(zhàn)。
For all the innovation of the past decade, nobody had been able to stem the flow of money out of the business.
盡管在過去的10年里進行了種種創(chuàng)新，但沒有人能夠阻止資金源源不斷地流出音樂行業(yè)。
Oddly enough, it was one that most Americans support: it would have expanded federal funding for embryonic stem-cell research.
說也奇怪，這是一項大多數(shù)美國人都支持的法案——加大聯(lián)邦政府對胚胎干細胞研究的資助。
He said authorities would collaborate with other jurisdictions to stem the flow of drugs at the source.
李明逵又表示，警方會與外地執(zhí)法部門加強合作，從源頭上堵截毒品。
Straight ahead of her, as though it were a rose on a stem .
在她軀干的前方，宛如一朵玫瑰綴在長長的枝條上。
He observed that, at night, a plant's leaves drooped next to the sides of the stem but in the morning they rose as if to worship the sun.
他發(fā)現(xiàn)，植物的葉子在夜間低垂于莖干的兩側(cè)，但到了早晨，這些葉子又升直了“身板”，似乎在向冉冉升起的太陽崇拜致意。
Professor Lovell-Badge, however, said the Chinese paper did not prove that the eggs that gave rise to babies came from the stem cells.
然而路夫.巴德教授說這篇論文不能證實那些能夠繁殖小老鼠的卵子來自于干細胞。
We believe that if you can't stem the bleeding, you risk losing up to 4% of your market share within the next six to 12 months.
我們相信如果你不能懸崖勒馬的話，在未來的六到十二個月中面臨喪失近4%市場份額的風險。
The reason embryonic stem cells are valued by scientists is that the cells' descendants can turn into any other sort of body cell.
科學家們認為胚胎干細胞有價值是因為，胚胎干細胞可以發(fā)育成為任何其他種類的體細胞。
Marban said he made the discovery accidentally while trying to reproduce cardiac stem cells.
馬班說，他在試圖繁殖心臟干細胞時意外發(fā)現(xiàn)這個結(jié)果。
Even through the twilight they could see that clinging to its stem against the wall was the long ivy leaf.
即使透過暮光他們也能看到那片長長的常青藤葉子，靠著磚墻，僅僅抱住梗莖。
"The apple fell because its stem would no longer hold it to its branch, " was his first thought.
“因為蘋果的蒂已經(jīng)不能使蘋果繼續(xù)掛在樹枝上，所以它掉下來了?！?c>這是他最初的想法。
Don't eat the stem of a mushroom.
不要吃蘑菇的梗。
He dissevered branches from the stem.
他從樹干上砍下許多樹枝。
For years, private financing has been used to create embryonic stem cell lines, mostly from discarded embryos from fertility clinics.
多年來，私人資金已用于制造胚胎干細胞系，絕大多數(shù)是從婦產(chǎn)科醫(yī)院丟棄的胚胎中制造出來的。
If it were only a flower, round and small and sweet, I could pluck it from its stem to set it in your hair.
假如它是一朵花，圓圓小小香香的，我就能從枝上采來戴在你的發(fā)上。
In the forests, trees in the wind might be induced stem bending even destroyed, thus affecting the quality and yield of wood.
樹木在風壓作用下可能被壓彎或者直接被毀壞，因而影響木材的質(zhì)量和產(chǎn)量，給林業(yè)造成巨大的經(jīng)濟損失。
But the general thinking seems to be that cancer stem cells represent a small population of the cells in a tumor.
但是一般想法仿佛如此：癌癥干細胞只占腫瘤細胞很小一部分。
This is to take a body cell and order it to turn into a stem cell using a set of molecular instructions.
這種方法靠一系列分子指令將體細胞轉(zhuǎn)化成干細胞。
Aside from transforming plain old human skin into stem cells, the placenta and amniotic fluid seem to have an abundance of these cells.
除了改變普通人類皮膚成干細胞，胎盤和羊水似乎有大量的這種細胞。
Councils are trying to stem the problem by using ductile steel for replacements, which has no scrap value.
市政部門試圖通過更換韌鋼井蓋的辦法來解決問題，因為韌鋼井蓋沒有廢品價值。
Her team is now testing to see whether stem cells will turn into endothelial cells in the channels and into muscle cells elsewhere.
她的團隊正在實驗，以測試干細胞是否能變成管腔內(nèi)的內(nèi)皮細胞和各處的肌肉細胞。
The beautiful maiden took the flax from her head, wound it round the stem of a slender birch, grasped the spindle, and began to spin.
少女從她頭上取下亞麻，將它繞在一根細細的白樺樹枝上，抓起紗錠開始紡紗。
You and I share the life of that immortal cell, known to science as the stem cell.
你和我都分享了這個不朽細胞的生命，也就是科學上眾所周知的干細胞。
Conceptual, word stem, and soundex searches are possible within the current general framework, but would take quite a bit of work.
概念上，詞干和探測法搜索可能已在現(xiàn)有的基本框架之中，但其需要花費很大的工作量。
A counter-terrorism official says it does not stem from the president's anger at having been a target himself.
一位反恐官員表示這一姿態(tài)并非源于總統(tǒng)先生對其自身成為恐怖份子目標的憤懣。
Hematopoietic stem cells have been shown to migrate to distant parts of the body in response to injury signals, as have cancer cells.
此外，科學家也發(fā)現(xiàn)，造血干細胞會因應受傷的信號，移動到身體較遠的其他部位，而癌細胞也會遷移。
Other researchers have been trying to get stem cells from liposuction specimens.
其他研究員則在試圖從脂肪抽吸術(shù)標本中獲取干細胞。
The president said he also signed an executive order calling on federal agencies to explore alternatives to human embryonic stem cells.
布什總統(tǒng)說，他也將簽署一個行政命令號召聯(lián)邦機構(gòu)去探測人類胚胎干細胞的供選方案。
'Because the stem cells are "off the shelf" and ready to use, it could be a convenient and universal therapy. '
‘因為干細胞從“架子上拿下”就能使用，那可能會是一種方便而且通用的治療方法?！?/jz>
If there was a way of extracting the stem cells without destroying them, I would not be opposed to it.
如果有一條可以不毀滅胚胎而提取干細胞的途徑，我就不會反對。
However, if I fall in love, if I love the woman at risk of such tragic event, I might as we hunt the lawlessness of the stem, like the lion.
不過，如果我戀愛過，如果我愛的女子遭此慘遇，我也許會象我們這位目無法紀的獵獅人一樣干的。
The bicycle wheel includes an air valve stem and a magnet mounted to the air valve stem.
自行車車輪包括氣閥桿和安裝于氣閥桿上的磁鐵。
A stem can be defined as a form to which affixes of any kind can be added.
詞干的定義是任何詞綴可以加于其上的詞的主要部分。
