Smokometer
烟密度计, 烟尘计
🗣️ 情景例句
Oh, let's see. It'll be about 3:30 before we have anybody free.
哦，让我想想。大概要到3：30我们才有空。
We've got to get a bed and a dresser for the bedroom.
我们必须有一张床和梳妆台放在卧室。
Could I have this sample free of charge?
这样品可以免费送我吗？