Cycloheptanone
[化] 环庚酮; 软木酮
🗣️ 情景例句
It is.
是的。
I took off my coat.
我脱下了我的外套。
It was his job to repair bicycles and at that time he used to work fourteen hours a day.
他那时的工作是修理自行车，并且通常是一天工作14个小时。