To retrieve only documents that match the term, but not those that match the lemmas, enclose the term in double quotes.

要查询只与这个词汇相匹配而不与词元相匹配的文档，需要给这个词汇加上双引号。

youdao

Search within a category: you can select a category and then search only documents that are both within the category and that match your query.

在目录中进行搜索：可以选择一个目录，然后只在这个目录中寻找与查询匹配的文档。

youdao

Only documents relating to the same application shall be included in one letter.

一件信函中应当只包含同一申请的文件。

youdao

The only government official at the meeting was a young Interior Ministry representative who was asked to convey the group's documents to his superiors.

VOA: standard.2009.05.15

She will not only include Tolstoy's prose, she will not even discriminate against business documents and school books.

她不会仅仅引用托尔斯泰的诗句,甚至不会在商业文书和教科书之间进行区分。

耶鲁公开课 - 现代诗歌课程节选

If Summary Fund Fact Sheets are the only documents participants are provided, how can we say participants are making informed investment decisions?

FORBES: Challenges to 401ks Continue: A Conversation with Fred Barstein, CEO of 401kExchange (February 15, 2008 )

Perjury: On 23 June 1987, made a statement under oath for use in judicial proceedings that the diary and a list of appointments were the only documents of that type which had been in his possession.

BBC: Lord Archer pleads not guilty

If in the far future, the only documents from this era of American history that social historians have to work with are Tax Court decisions, I bet they could do a pretty fair job of reconstructing many of the changes in our culture.

FORBES: Doctor Joyce Brothers Cameo In Tax Court And Women's History