Kapnometer
烟密度计
🗣️ 情景例句
If the mood takes me, I'll head down the beach for an evening stroll.
如果心情不好，傍晚我会到海边散步。
I haven't heard from him for a long time.
我很久没有收到他的信了。
If I win a lot of money I'll buy you a mink coat.
要是我赢了许多钱，我给你买件貂皮大衣。