- 问题详情: Thetimemaysooncomewhenwesaygoodbyetomostoftheworld’slanguages.Todayhumansexpressthemselvesinover6,000differentlanguages.Butthatisquicklychanging.Manyscientistssaythatoverhalfoftheselanguageswilldisappearwithinthenext50years.After100years...
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