Functionality is what a computer, a program, or a piece of equipment can do — one job, or the whole set of jobs. People in tech use it all the time: “more functionality” means it can do more things.

Functionalityfunctionality(功能) is what a computer, a program, or a piece of equipment can do指的是電腦、程式或設備能做到的事 one job, or the whole set of jobs可以是一項功能，也可以是整套功能. People in tech科技圈的人 use it all the time常常掛在嘴邊: “more functionality”「more functionality」 means it can do more things意思是它能做的事更多了

It can name the whole range (“the functionality of this app”) or one capability (“search functionality”).

It can name the whole range它可以指整體範圍 (“the functionality of this app”)(像「the functionality of this app」) or one capability也可以指單一項功能 (“search functionality”)(像「search functionality」)

Though actually, careful speakers often prefer function or feature. Functionality has become a bit of an office-and-software word, and people sometimes pile it on when they only mean “it works” or “it has this button.” You hear it in manuals, product talks, and business English much more than in warm everyday chat.

Though actually不過其實, careful speakers often prefer講究一點的人比較常用 function or featurefunction或feature這兩個字. Functionality has become a bit of an office-and-software wordfunctionality已經變成有點辦公室和軟體氣息的字, and people sometimes pile it on大家有時候會把它用得過重 when they only mean “it works” or “it has this button.”其實只是想說「它能用」或「它有這個按鈕」 You hear it in manuals, product talks, and business English你會在說明書、產品簡報、商用英文裡聽到它 much more than in warm everyday chat比在輕鬆的日常閒聊裡常見得多