wash dirt in a pan to separate out the precious minerals
双语例句
In gold panning,the mixture is swirled around in a shallow pan with water,the heavier gold particles settle to the bottom and the lighter particles are washed away. 淘金时，把金矿沙放在浅盘里用水淘洗，较重的金颗粒落在盘底，较轻的颗料就被冲走。
