Diphosphane
二膦, 二磷烷
🗣️ 情景例句
Please, after you.
你先请。
What's the temperature today?
今天的温度是多少？
The hardened professional smuggler, on the other hand, is never troubled by such feelings, even if he has five hundred gold watches hidden in his suitcase.
而老练的职业走私犯却使手提箱里藏着500只金表，却也处之泰然。