Saratin
乳清酸
🗣️ 情景例句
I'll help.
我也来帮忙。
You'll fall, if you don't take care.
你不专心的话，就会跌倒。
So he took off the second shoe and put it under his bed very quietly.
他脱下第二只鞋子，轻轻地放在床下边。