Pentafluorated
五氟化的
🗣️ 情景例句
Oh, I took the liberty of ordering some breakfast for you.
噢 ，我冒昧给你们订了早餐。
I'm going to buy four feet.
我要买四英尺。
We'll have to cancel if we don't get that order soon.
如果不能很快拿到货，我们只有取消啦。