Diphenylmethane
二苯基甲烷
🗣️ 情景例句
He said they need a new book of photographs,
他说他公司需要一本新的摄影集，
Strong reasons make strong actions.
理由充足，行动就坚决。
Yes, do please. That's a good idea.
对，就谈这个。那是一个好主意。