Diphenylmethane
二苯基甲烷
🗣️ 情景例句
... I mean that when I say I care,
……我的意思是当我说 我关心 时
Generally speaking, a contract cannot be changed after it has been signed by both parties.
一般来讲，合同一经双方签订就不得更改。
How do you do?
您好！