Airpack
n. (消防队员、搜索队员用的)氧气背包
🗣️ 情景例句
to read to the students--their own children, really.
共同为学生们， 其实就是他们自己的孩子， 朗读
Just the other way round.
正相反。
That's very late.Can the dentist see me now?
那就太晚了。牙科医生现在就不能给我看一下吗？