我们需要找出这篇论文的主题词。

We need to identify the key word of this paper.

你能告诉我这本书的主题词是什么吗？

Can you tell me what the key word of this book is?

请在搜索引擎中输入正确的主题词。

Please enter the correct key word in the search engine.

这个报告的主题词是“可持续发展”。

The key word of this report is sustainable development.

在这篇文章中，主题词是“环境保护”。

In this article, the key word is environmental protection.

主题词索引是这本书的附录.

A key word index is an enlargement to the book.

你可以选择题名、主题词或通用关键词等途径。

Then, you can select key words of the title, subject or general as you like.

你可以选择题名 、 主题词或通用关键词等途径.

Then , you can select key words of the title, subject or general as you like.

作为一篇合格的论文，主题词是必不可少的。

In a qualified thesis paper, key words are indispensable.

点击讲述句子大意的主题词。

Lick on the topic word that tells what the sentences are about.