淘洗
táo​xǐ

to wash

淘洗 táo​xǐ
to wash
to wash; to rinse; to clean by washing in a stream of water
elutriation
the process of separating lighter from heavier particles by washing with water; to clean sludge in water treatment
to erode
to wash away or impact by the force of a current (of a river, waves, etc.)