Dape
[医][=4，4'-diaminodiphenyl ether]4，4'-二氨基二苯醚
🗣️ 情景例句
We will also need a letter of recommendation.
我们还要求一封推荐函。
I wish you wouldn't play the TV so loud.
希望你不要把电视机开得这么响。
The teacher gives one of them an eraser.
教师给其中一人一块橡皮擦。