Oxygen index
[化] 氧指數
?? 詞語組成解析
index
['?nd?ks]
n. 索引;<數>指數;指示;標志;
vt. 給…編索引;把…編入索引;[經濟學]按生活指數調整（工資、價格等）;
vi. [機械學]轉位;
in(in)+dex(proclaim)→指針；索引；指數；食指；指標
??? 情景例句
He took French leave.
他不辭而別。
I'm afraid not. She doesn't have any openings in the morning.
恐怕不行。上午她沒有空。
The fire brigade was called and two fire fighter freed George using a special type of grease.
有人打電話叫來消防隊，兩位消防隊員使用了一種特殊的潤滑劑才使喬治得以解脫。