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Lub qhov rooj hluav taws kub hnyiab tuaj yeem tiv thaiv cov neeg sab nraud nkag mus rau sab hauv yam tsis tau tso cai, thaum tso cai rau cov neeg sab hauv tawm mus thaum muaj xwm txheej ceev, nrog lub suab nrov nrov thaum siv tsis tau tso cai. Lub qhov rooj hluav taws xob thawb pas nrig kuj tseem muaj txoj haujlwm ntawm kev khiav tawm hluav taws kom qhib ceev thiab khiav tawm thaum muaj xwm txheej ceev, thiab paub txog kev tswj hwm kev sib koom ua ke ntawm qhov hluav taws kub khiav kev nyab xeeb thiab hluav taws.

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