Propanediol
丙二醇
🗣️ 情景例句
Collecting matchsticks was fun, until that fateful day one of them caught alight.
收集火柴是一种乐趣，除非一天其中一根火柴不幸燃烧起来。
When did you take the examination?
你什么时候去参加考试？
This has not been easy because I own over a thousand books.
但这并不容易，因为我有1，000多本书。