Diether
[机] 二醚
🗣️ 情景例句
In those days, when they made quilts.
那个时代 ，人们做被罩时，
If the ox falls,whet your knife.
牛一倒，快磨刀；人遭难，众人踩。
She finished it at half past nine. She went to bed before a quarter to ten.
30 她完成了作业。她9：45之前上床睡觉。