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 ...
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