Using public databases of DNA sequences, they found that people who speak non-tonallanguages commonly have mutated versions of two different genes.
利用dna序列的公共数据库,他们发现说非声调语言的人通常有两种不同基因的突变形式。
2
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。
3
English language is not specifically a tonal language in which the same word has totally different meanings when spoken at different tones as in some Asian languages.