Endotrachea
[动]气管内层
🗣️ 情景例句
the kids in the ward
住院的孩子们
What do you do in your spare time?
空闲时间你干什么？
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。