If a computer program is case-sensitive, it treats a big letter and a small letter as different things. Apple, apple, and APPLE are not the same to it.

If如果 a computer program一個電腦程式 is case-sensitive， it它 treats把 a big letter大寫字母 and a small letter和小寫字母 as different things當成不同的東西。 Apple, apple, and APPLE這三種寫法， to it對它來說 are not the same並不相同。

Passwords often work this way: the right letters in the wrong size will fail, and the computer will not be kind about it. File names can be the same story. On many Linux machines, Report.pdf and report.pdf are two different files; on many Windows machines they are treated as one, which is why the same name can behave differently on two computers.

Passwords密碼 often常常 work this way就是這樣運作： the right letters字母對了 in the wrong size大小寫錯了 will fail就會失敗， and the computer而電腦 will not be kind about it不會對這件事客氣。 File names檔名 can be the same story也可能是同一齣戲。 On many Linux machines在很多 Linux 機器上， Report.pdf and report.pdf是 two different files兩個不同的檔案； on many Windows machines在很多 Windows 機器上 they它們 are treated as one被當成同一個， which is why這就是為什麼 the same name同一個名字 on two computers在兩台電腦上 can behave differently行為可能不一樣。

The opposite is case-insensitive: the program does not care about size. This is a computer word, a little technical, but you meet it the first time a login box refuses you. “Case” here means big letters or small letters — printers used to keep them in different boxes, called cases — not a court case, and not a box you carry.

The opposite相反的 is case-insensitive是 case-insensitive： the program程式 does not care about不在乎 size大小。 This這 is a computer word是個電腦字， a little technical有點技術， but但 the first time a login box refuses you登入框第一次拒絕你的時候 you meet it你就會遇到它。 "Case" here這裡的 case means指的是 big letters or small letters大寫或小寫字母 — printers從前的印刷工人 used to keep them把它們放 in different boxes在不同的盒子裡， called cases那些盒子就叫 case — not a court case不是官司的案子， and not a box you carry也不是你提著走的箱子。