Edna
[化] 二硝基乙胺
🗣️ 情景例句
We must prepare ourselves to have a hard time.
我们必须准备过艰苦的日子。
I always used to leave for work at 8:30.
我过去总是在8:30离开去工作。
Do you realize that all of these shirts are half off?
你知道这些衬衫都卖半价了吗？