Diphenylethlene
二苯基乙烯
🗣️ 情景例句
It was a gradual process, involving many factors.
这是个渐进的过程，涉及到方方面面。
Whom will you race with?
你将和谁比赛？
Will you connect this wire to the television?
你把这根电线和电视机连上好吗？