英文::utility

(摘自朗文當代英漢雙解詞典第1557頁)

u.til.i.ty n.

1. [U] the degree of usefulness 功用；效用
2. [C 常多數] any useful service for the public, such as supplies of water to the home, the bus service, etc. 公用事業(如水, 電, 交通等)