Native Australian Charlie Mungulda is the only person alive known to speak that language, one of thousands around the world on the brink of extinction.

因为澳大利亚土著居民查理•穆尼古尔答是世界上唯一会说这种语言的人。 包括Amurdag语在内的全世界几千种语言正濒临消失。

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"It was a full mission success, " program manager Charlie Brink of the Air Force Research Laboratory at Wright-Patterson Air Force Base said in a statement.

NPR: Experimental Air Force Aircraft Goes Hypersonic