Injection efficiency
[計(jì)] 注入系數(shù)
?? 詞語(yǔ)組成解析
injection
[?n'd??k??n]
n. 注射;注射劑;[醫(yī)]充血;（衛(wèi)星等的）入軌;
in向內(nèi)，進(jìn)入+ject投擲，扔+ ion名詞后綴 → 向內(nèi)投擲 → 注射
??? 情景例句
Now, no more stalling.
現(xiàn)在，不用再拖延了。
I don't know where I am.
我不知道我身在何處。
He's been there for over two years. He's been there since two years ago.
他到校有兩年多時(shí)間了。他兩年前就到那兒學(xué)習(xí)了。