Dichloroprene
二氯丁二烯
??? 情景例句
Susan, I understand you're in the toy business. Susan
聽說 ，是在玩具業(yè)工作。
You were here in February,weren't you?
二月份你曾在這里，對不對？
That all depends on the size of the order.
這要訂購量的多寡。