Prefloat
预浮选
🗣️ 情景例句
I'm really concerned about them,
我真的为他们担心，
Where is the boarding gate for this flight?
这班飞机的登机门在哪儿？
Here's another photo of Lily. Look! She's swimming very well.
这儿有莉莉的另一张照片。看！她正在游泳，游得非常好。