Qhov zais hluav taws nyob qhov rooj nplooj feem ntau yog qhib thiab muab zais rau hauv phab ntsa. Ua ke nrog kev sib txuas hluav taws xob, lub qhov rooj nplooj yuav kaw, uas muaj kev nyab xeeb dua, tib neeg thiab zoo nkauj dua.

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