Ethyloic-
[化] 羧甲基; 侧链上的羧甲基
🗣️ 情景例句
Oh, you're right.
哦， 说得对。
Coward!
胆小鬼！
So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
于是，考古学家们既缺乏历史记载，又无口头传说来帮助他们弄清最早的“现代人”是从哪里来的。