Lactucic acid
[医] 莴苣酸
🧩 词语组成解析
🗣️ 情景例句
He worked his way through college.
他半工半读念完大学。
Right on, Packers!
加油，博卡兹！
Affluent he may be, but he is by no means sure what, to tip the doorman or the chambermaid.
他们可能很富有，但给看门人和房间女服务员多少小费，心中却根本没有数；