词汇知识是语言使用者语言能力的重要表现。

Vocabulary knowledge represents the language competence of its user.

youdao

世界语是一种人造语言，目的是充当国际上不同语言使用者之间交流的辅助手段。

Esperanto is an artificial language, designed to serve internationally as an auxiliary means of communication among speakers of different languages.

youdao

他是通晓一种亚洲语言和英语的双语使用者。

He is bilingual in an Asian language and English.

《柯林斯英汉双解大词典》

And all of this has to be learned through exposure to language users.

而且所有这些都必须通过,暴露于拥有语言使用者的环境才能习得

耶鲁公开课 - 心理学导论课程节选