洋底地殼 yáng dǐ dì qiào

DEFINITIONS

  1. oceanic crust (geology)

CHARACTERS

洋 yáng
HSK 4
ocean, sea; foreign; western
底 dǐ
HSK 4
bottom, underneath, underside
地 dì
HSK 3
earth; soil, ground; region
殼 qiào casing, shell, husk, hull, skin