海底地震 hǎidǐdìzhèn seaquake Origin Definitions Defs Strokes Stroke Words Sentences Sents 海底 hǎidǐ noun seabed the deep sea; the depths of the ocean; seabed; seafloor地震 dìzhèn noun earthquake earthquake; to shake or undergo an earthquake; movement of the earth's crust caused by tectonic shifts, volcanic activity, or explosions