Umbiliform
a. 脐状的
🗣️ 情景例句
it suddenly became real.
一切突然成真了。
I'll see if she's in.
我去看看她在不在。
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。