Gapping
不紧密接触
🗣️ 情景例句
Hi.
嗨。
I only had five dollars.
我只剩五美元。
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。