utility

n. /juːˈtɪləti/ B2

效用；实用性；公用事业

The state of being useful, profitable, or beneficial.

仙境例句

A pack of cards has little utility as a court, thought Alice, but it makes a fine game.

爱丽丝想，一副纸牌当法庭没多大用处，可拿来玩游戏倒挺好。