Muaj peb yam khoom siv raw siv hauv kev tsim cov hnab yas, ib qho yog cov khoom siv rov ua dua tshiab, ib qho yog cov khoom siv translucent, thiab lwm yam yog cov khoom siv tshiab.Ntawm peb yam khoom siv raw, tus nqi ntawm cov khoom siv rov ua dua tshiab yog qhov qis tshaj, yog li ntau tus neeg siv khoom siv.Hauv lub ...
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