Given the limited utility then, the U. S. and its Allies must now decide if all the trouble involved in setting up a zone — including inevitable questions of legality — are worth the risk.

考虑到有限的效用，美国和他的盟友们现在必须要决定所有建立禁飞区涉及到的麻烦—包括合法性问题的持续争论—是否值得去冒险。

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The 'u' stands for utility, or the desire to complete a given task.

表示效用，或完成所给任务的愿望。

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Models such as the Chevrolet Equinox and Cadillac SRX sport-utility vehicles and Buick Lacrosse sedan helped GM increase U. S. deliveries by 7 percent last year.

去年，雪佛兰equinox和凯迪拉克srx越野车和别克君越轿车等车型帮助通用将美国的交付量提高了7%。

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Authorities arrested a Pakistan-born U.S.citizen, Faisal Shahzad, two days after an explosive device inside a sports utility vehicle failed to detonate in Times Square on May 1.

VOA: standard.2010.05.14

Because the U.S. utility sector is so capital intensive, it must maintain investment-grade credit ratings.

FORBES: Energy Infrastructure: Critical to Economic Momentum

Like other U.S. utility executives, Nye felt compelled to invest his company's cash in higher-growth markets overseas.

FORBES: Waiting game

U.S. utility stocks have risen a long way, and Eaton Vance's Ms. Saryan says you may find better opportunities across the Atlantic.

WSJ: Upside: The Great Dividend Hunt