Lactasin
[化] 乳酶生
🗣️ 情景例句
Oh, you think you're going to have a hard time
你认为需要大费周折
I have no idea about it.
我一点都不知道。
While he was eating, I asked him to lend me twenty pounds.
当他吃饭时，我提出向他借20英镑。