functionality
柯林斯词典
1. N-UNCOUNT The functionality of a computer or other machine is how useful it is or how many functions it can perform. 功能性
It is significantly more compact than any comparable laptop, with no loss in functionality. 它比其它任何一台同類的筆記本電腦都更便於攜帶，竝且在功能性上無任何差別。
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functionality /ˌfʌŋkʃənˈælɪtɪ/
剑桥词典
- any or all of the operations performed by a piece of equipment or a software program
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