O grade

美 　英

• n.普通等級考試（蘇格蘭舊時的單科考試，低于高級考試，通常在 16 歲時參加。1988 年由標(biāo)準(zhǔn)等級考試取代）

英漢解釋

n.	1. a former lower-level examination for the Scottish Certificate of Education, now replaced by Standard grade. 2. a subject studied, an examination taken, or a pass obtained at O grade

例句

o Grade separation, using bridges (or, less often, tunnels) freeing movements from having to stop for other crossing movements

立交，橋梁使用（或很少，隧道）解放運(yùn)動無法阻止其他過境轉(zhuǎn)移