Diglycolamine
二甘醇胺
🗣️ 情景例句
Good morning, sir. May I help you?
早安，先生。能为您服务吗？
How are you going?Are you going by boat?
你怎样去?坐船去吗？
It was stolen twenty years ago when Dan was a boy of fifteen!
这是20年前丹还是一个15岁的孩子时被人偷走的！