n. the 3rd planet from the sun; the planet we live on
n. the loose soft material that makes up a large part of the land surface
n. the abode of mortals (as contrasted with Heaven or Hell)
n. once thought to be one of four elements composing the universe (Empedocles)
n. 地球, 泥土, 世界, 尘世
vt. 埋入土中, 赶入洞内
vi. 躲入洞内