Macrocycle
(包含15个原子以上的)大环
🗣️ 情景例句
This afternoon we're going to visit a friend in the hospital.
今天下午我们将去探望一位住院的朋友。
The mills of God grind slowly but sure.
天网恢恢，疏而不漏。
What's that over there?
那边的是什么呀？