Submolecule
链段, 亚分子
🗣️ 情景例句
You are a very smart young man, Robbie.
你是个绝顶聪明的年轻人， Robbie。
Sorry, She is out. Shall I take a message?
抱歉，她外出了，你要留口信吗？
For a long time.I watched them scurrying around the base of the tree in bewilderment.
在很长一段时间里，我看见蚂蚁围着大树底部来回转悠，不知所措。