Lacticcasein
乳酪素
🗣️ 情景例句
You haven't answered my question.
你还没有回答我的问题呢。
We can't recall how often he's written.
我们记不起来他每隔多久写一封信。
It suddenly occurred to one of the workers to open up the box.
突然一个工人想到打开箱子看看。