Abietinolie acid
[机] 松香亭脑酸
🧩 词语组成解析
🗣️ 情景例句
But I flunked all these classes.
但是所有的这些课都不及极。
If you have any comment about these clauses, do not hesitate to make.
对这些条款有何意见，请尽管提，不必客气。
Don't let me down.
别让我失望。