求翻译：上的作用和地位也不是特别清楚。本文针对我国外语教学的需要，集中介绍了体态语、副语言、客体语和环境语，并做了大量的实地课堂观察，从而在理论和实践上探讨了非语言交际在外语教学中的作用。作者期待本论文能对广大的外语教学界的师生在研究、工作、教是什么意思？

On the role and status are not particularly clear. Address the needs of foreign language teaching in China, focuses on body language, paralanguage, object language and environment, language, and have done a lot of classroom observation in the field, thus in theor