Dioform
[化] 1,2-二氯乙烯
🗣️ 情景例句
In those days, when they made quilts.
那个时代 ，人们做被罩时，
He must have three more weeks of rest before he is released.
他在出院以前，还需要三周时间的静养。
What was the date?
（昨天）是几月几日？