Lub tshuab sorting xim, feem ntau hu ua xim sorter lossis xim sorting khoom, yog ib qho khoom siv siv hauv ntau yam lag luam, nrog rau kev ua liaj ua teb, kev ua zaub mov, thiab kev tsim khoom, los txheeb cov khoom lossis cov khoom siv raws li lawv cov xim thiab lwm yam khoom siv kho qhov muag. Cov tshuab no yog ...
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