🧩 词语组成解析
air
[ɛə]
n. 天空;气氛;空运;（简单易记的）曲调;
vt.& vi. 晾晒;烘干;播送;广播;
vt. 使房间通风， 透气;
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
Good morning.
早安。
Karl must concentrate on his work.
卡尔必须集中精力于自己的工作。
I don't think you'll have any difficulty in pushing sales.
我认为你推销时不会有任何困难。