Cov qhov rooj iav tiv thaiv hluav taws yog cov iav qhov rooj muaj kev nyab xeeb. Cov iav tiv thaiv hluav taws muaj lub kaum sab xis tom qab tawg, thiab cov khoom tawg yog me dua li cov iav tempered, txo kev puas tsuaj rau tib neeg.

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