Xov xwm kev lag luam
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Kev thov hluav taws kub retardant ntawm cov khoom siv hauv tsev
Raws li kev txhim kho hauv zej zog, ntau thiab ntau tus neeg tau txais kev pab los ntawm ntau lub khw saib xyuas cov neeg hauv tsev neeg kev noj qab haus huv thiab kev nyab xeeb thaum xaiv cov khoom siv ntoo yas sib xyaw.Ntawm ib sab, peb tsom mus rau cov khoom sib xyaw nws tus kheej kom paub tseeb tias nws yog ntsuab thiab muaj kev nyab xeeb cov khoom siv ...Nyeem ntxiv
