Languages in East Asia tend to have tonal vowels, and those of the north-eastern Caucasus are known for consonantal complexity: Ubykh has 78 consonant sounds.
东亚的语言往往有带声调的元音，而东北高加索地区的语言以辅音复杂而闻名：尤比克语有78个辅音。
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In a study published in the journal Ambio, scientists found that lead levels in soil in the North-eastern United States had decreased markedly since the introduction of unleaded gasoline.