This finding bolsters the so-called gestural theory of language evolution, whose proponents argue that language evolved initially as a gesture system before becoming vocal.

这个发现奠定了语言进化中所谓的手势理论。 这个理论的拥护者主张，语言在成为一种发声的表达方式之前是由手势表达系统演化而来的。

youdao

The are many reasons for influencing pitch problems in bamboo flute playing, such as vocal form, breath method, playing gesture and finger positions.

竹笛演奏中音高问题产生的原因，包括口形、呼吸方法、吹奏姿势、指法等方面。

youdao

The are many reasons for influencing pitch problems in bamboo flute playing, such as vocal form, breath method, playing gesture and finger positions.

竹笛演奏中音高问题产生的原因，包括口形、呼吸方法、吹奏姿势、指法等方面。

youdao