信息不完整 “Ethnologue: Languages of the World, 16th Edition (2009)” . M. Paul Lewis · SIL International
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近危
20 percent certain, based on the evidence available
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4,500
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4,500 users out of 1,600 deaf and 20,000 hearing impaired. 2,000 persons need regular help from interpreters (1998 U. Sutrop)