Borin
[机] 烃基硼
🗣️ 情景例句
when she was running for the school board.
在妈妈竞选联合校董会席次时。
Excuse me, I'd like to ask you a question.
对不起，我可以问个问题吗？
Although we can't see these atoms, they really do exist.
虽然我们看不见原子，但它们的确存在。