Easement
n. 缓和, 减轻, 便利设施\\n[经] 在他人土地上的通行权, 地役权
🗣️ 情景例句
Do you have a cell phone?
你有手机吗？
Hello. May I speak to Mr. Green?
你好，我找格林先生。
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。