What's gold and silver ? Mere dross.金银财宝,身外之物.Frequent skimming or improper skimming can cause a much higher dross loss.撇渣过频或操作不当会使浮渣损失很大.They tried to purge metal of dross.他们试图清除金属熔化时浮升表面的渣滓....
dross coal渣煤, 不粘(结性)煤From moment to moment, a wise man removes his own impurities, as a smith removes the dross of silver.聪明的人时常清除内心的污垢，就如同工匠清理银矿中的杂质。What's gold and silver ? Mere dross.金银财宝,身外之物.I go through phases...