| 词汇 | utility |
| 词根词缀 | 词源： 1391, "fact of being useful," from O.Fr. utilite "usefulness" (1291), earlier utilitet (12c.), from L. utilitatem (nom. utilitas) "usefulness, serviceableness, profit," from utilis "usable," from uti (see use). As a shortened form of public utility it is recorded from 1930. 词根记忆： n. 公用事业;有用(ut+ility)[us,ut=use,表示"用"] |
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