Classification is the act of putting things into groups, so each thing sits with the others that belong with it. You look at a plant, an animal, a book, a problem at work, and you say: this kind, not that kind. Scientists do this a lot, and so do libraries, shops, and computers.

Classification Classification is the act of putting things into groups是把東西分門別類的動作，so each thing sits with the others that belong with it讓每個東西都跟屬於同一類的其他東西放在一起。You look at a plant, an animal, a book, a problem at work你看著一株植物、一隻動物、一本書、工作上的一個問題，and you say: this kind, not that kind然後說：這一類，不是那一類。Scientists do this a lot科學家很常做這件事，and so do libraries, shops, and computers圖書館、商店、電腦也是

People also use the word for the result, not only the doing — “a classification of birds” can mean the list or system you end up with.

People also use the word for the result, not only the doing人們也會用這個字來指結果，不只是指這個動作——"a classification of birds" can mean the list or system you end up with「a classification of birds」可以指你最後得出的那份清單或系統

Though actually, offices stretch it further: classification can mean how secret a paper is, and who is allowed to see it. That is a special, official use. The everyday core is still sorting things into the right boxes.

Though actually不過其實，offices stretch it further官方會把它延伸得更廣：classification can mean how secret a paper isclassification可以指一份文件有多機密，and who is allowed to see it以及誰能看它。That is a special, official use那是一種特殊、官方的用法。The everyday core is still sorting things into the right boxes日常的核心意思仍然是把東西分到正確的類別裡

It sounds a little formal; in speech people often just say sorting or grouping.

It sounds a little formal它聽起來有點正式；in speech people often just say sorting or grouping說話的時候人們常常就直接說sorting或grouping