Macrocyclic polyether
[化] 大环多醚
🧩 词语组成解析
[机] 大环的
n. [化]聚醚,多醚
🗣️ 情景例句
He knows all there is to know,
他无所不知，
May I see your Identification card?
我能看你的身份证吗？
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？