So I'm saving this file, notice there is a few keywords that we'll come back to next week like main which is kind of the main part of my program.

保存此文件，注意这有几个关键字,我们在下周介绍,比如代表程序主体部分的“main“

哈佛公开课 - 计算机科学课程节选

There are as many web pages for advertisers as there are keywords that can be typed into a search engine, situations that game players might find themselves in, and so forth.

ECONOMIST: Internet advertising

Then there is the issue of keywords.

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There are endless ways to match keywords, locations and interests.

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