Underclassification
降低货物等级
🗣️ 情景例句
I'm a foreign student, and I'd like to make some new friends.
我是个外国学生， 我想交几个新朋友。
I will see you again.
我会再见到你。
The brain needs a continuous supply of blood.
大脑需要连续不断地供血。