Circiter
<拉>prep.=circa
🗣️ 情景例句
Have you been getting enough rest?
你休息的足够吗？
Do you speak English?
你会说英语吗？
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。