Alertor
[计] 报警器
🗣️ 情景例句
How did the test turn out?
考试结果怎样？
How long will your offer hold good?
一般你们报盘的有效期是多长？
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。