13. Many of the world's lesser-known languages are being lost as fewer and fewer people speak them. The governments of countries in which these languages are spoken should act to prevent such languages from becoming extinct.
许多世界上鲜为人知的语言由于越来越少的人使用而逐渐消失。使用这些语言的国家应该采取措施防止这些语言绝迹。