Underlayers
(underlayer 的复数) n.下层, 底层,衬层
🗣️ 情景例句
By plane?
坐飞机来？
Whom do you want to call?
你要打电话给谁？
The eraser goes from one student to another first one way, then another.
橡皮擦从一个学生传给另一个学生－先从这个方向传过去，然后返回来。