Heptanediol
[化] 庚二醇
🗣️ 情景例句
I understand you used to be in the construction business,
听说你过去从事建筑业
How many years have you been playing pingpong?
你打乒乓球多少年了？
Did you find your ticket, sir?
你找到你的票了吗，先生？