Scolpellum
针
🗣️ 情景例句
Have a nice weekend.
周末快乐。
Am I your teacher?
我是你们的教员吗？
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。