风化作用 fēng huà zuò yòng

DEFINITIONS

  1. weathering (of rocks)
  2. erosion (by wind etc)

CHARACTERS

风 fēng
HSK 3
wind; air; manners, atmosphere
化 huà
HSK 3
change, convert, reform; -ize
作 zuò
HSK 1
make; work; compose, write; act, perform
用 yòng
HSK 3
use, employ, apply, operate; use