O-alkylation
[化] O-烷基化
🧩 词语组成解析
n. 烷化作用, 烷化\\n[化] 烷基化; 烷基取代
🗣️ 情景例句
Come on.
过来。
If he doesn't help him, I will.
如果他不，我将帮助他。
It must have been about two in the morning when I returned home.
我回到家时，肯定已是凌晨两点左右了。