Acording to a Unesco report released on the International Mother Language Day on Feb 21 last year, about half of the 6,700 or so languages in the world are in danger of dying.

• 去年2月21日是“国际母语日”，联合国教科文组织公布了《全球濒临消失危机的语言概况》的报告，指出全球6700多种语言中，约有半数正面临消失灭绝的危机。