Dape
[醫(yī)][=4，4'-diaminodiphenyl ether]4，4'-二氨基二苯醚
??? 情景例句
John is tied up at the present time.
John現(xiàn)在有事。
What is that to you?
那對你算什么？
We can give you a better one at thesame price.
我們可以給你更好的一種，價(jià)錢一樣。