“污垢”的英语？

重要的原则是决不清除贵重硬币上的污垢。The golden rule is never to clean a valuable coin.通过张开的毛孔排出汗液和污垢。Your open pores excrete sweat and dirt.他的衣服沾满了污垢。His clothes were covered in dirt....

“污垢”的拼音为：wū gòu...