Lub qhov rooj hluav taws uas ib txwm raug kaw tsis yog tsuas yog muaj lub luag haujlwm ntawm lub qhov rooj zoo tib yam nkaus xwb, tab sis kuj tseem muaj lub luag haujlwm los xyuas kom muaj kev khiav tawm ntawm tib neeg. Feem ntau yog siv rau hauv thaj chaw nyob.

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