std. by
美
英 
例句
You can get an STD by having unprotected sex with a partner who's infected.
可以通過(guò)與感染者的無(wú)防護(hù)性行為而感染性病。
Comparative analysis on the differences in epidemic situation of STD by different epidemic situation report systems
不同疫情報(bào)告系統(tǒng)性病疫情差異對(duì)比分析
Studied on High- quality STD by Water Methods
水法制高純殺蟲單原粉新技術(shù)研究