IELTS stands for International English Language Testing System.

雅思考试是国际英语语言测试系统是简称。

youdao

However, English and Chinese belong to different language families, and each of them has its own complete system and different cultural background.

然而，英语和汉语属于不同的语系，每一种语言都有自己的完整的系统和不同的文化背景。

youdao

However, English and Chinese belong to different language families, and each of them has its own complete system and different cultural background.

然而，英语和汉语属于不同的语系，每一种语言都有自己的完整的系统和不同的文化背景。

youdao