Stems
n. 树管；阻挡物；茎（stem的复数）
🗣️ 情景例句
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
To live in the library
过着研究的生活
What did you do at the meeting?
你们在会上做什么呢？