Arsenesulfonyl
砷磺酰
??? 情景例句
No. He left a note on the door
是的。他留了一張條子在門上
Cindy's sister is coming to stay with her a week from tomorrow.
辛迪的妹妹從明天起一個星期以后將過來和她住在一起。
The Chinese people are very friendly.
中國人很友好。