Kapnometer
烟密度计
🗣️ 情景例句
Just listen to the sound.
听听这些声音。
A bird is known by its note,and a man by his talk.
鸟以声闻，人以言知。
Bring the picnic basket up here, under this big tree, said Ann.
“把野餐篮子拿到这儿来，放在这棵大树下，”安说。