A keyword is a word you type into a computer so it will search for that word — on the internet, in a shop’s search box, or inside a file. If you type “night market Taipei”, those are your keywords, and the computer tries to find pages that match them.

A keyword關鍵字 is a word you type into a computer是你打進電腦裡的字 so it will search for that word讓它去搜尋那個字 — on the internet在網路上, in a shop's search box在店家的搜尋欄裡, or inside a file或是在檔案裡。If you type "night market Taipei"如果你打「night market Taipei」, those are your keywords那些就是你的關鍵字, and the computer tries to find pages that match them電腦就會試著找出符合的頁面。

Students, shoppers, and anyone looking things up use this word every day; it is normal English now, not only for experts. People stretch it, too: a short phrase often counts as a “keyword,” not only a single word.

Students, shoppers, and anyone looking things up學生、買東西的人,還有任何在查資料的人 use this word every day每天都在用這個字; it is normal English now現在是很普通的英文, not only for experts不是只有專家才用。People stretch it, too大家也會把它用得更寬鬆: a short phrase一小段短語 often counts as a "keyword,"也常被算成「keyword」, not only a single word不是只有單一個字才算。

Though actually, the idea is older than Google. A keyword was already “the important word that tells you what a text is about,” and teachers still use it that way in class.

Though actually不過其實, the idea is older than Google這個概念比Google還要老。A keyword was alreadykeyword原本就是 "the important word that tells you what a text is about,"「告訴你一篇文章在講什麼的重要字」, and teachers still use it that way in class老師在課堂上到現在還是這樣用。

(In computer code, keyword can also mean a special reserved word like if; that is a different job for the same label, and not the sense you need first.)

In computer code在程式碼裡, keyword can also mean a special reserved word like ifkeyword也可以指像if這種特殊的保留字; that is a different job for the same label這是同一個字的另一種用法, and not the sense you need first不是你最先需要知道的意思。