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Plaub qhov kev paub txog kev nyab xeeb ntawm kev siv roj teeb
Peb feem ntau hnov ib co xov xwm hais txog qhov hluav taws kub thiab tawg ntawm hluav taws xob tsheb roj teeb.Qhov tseeb, 90% ntawm qhov xwm txheej no yog vim kev ua haujlwm tsis raug ntawm cov neeg siv, thaum tsuas yog li 5% yog vim qhov zoo.Hauv qhov no, cov kws tshaj lij tau hais tias thaum siv hluav taws xob tsheb batter ...Nyeem ntxiv