microseism

名词 microseism:

1. a small earthquake
   同义词：tremor, earth tremor

mi.cro.seism

n.（名词）
A faint earth tremor caused by natural phenomena, such as winds and strong ocean waves.
微震，脉动：由自然现象，如风或强海波引起的轻微地球震动

【引伸】
mi.croseis.mic