Bormethyl
三甲硼
🗣️ 情景例句
Well, I'd describe it as a book which is a ...
嗯， 我会把这本书形容一幅……
We can't recall how often he's written.
我们记不起来他每隔多久写一封信。
Sorry, Lucy. You look the same.
对不起，露茜。你们长得很像。