You can also suppress printing of identical lines with the -u option.

您还可以用- u选项来禁止打印相同的行。

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In one of the most unforgettable tag lines of any AD campaign, the U. S. Army promised recruits it would help them "be all that you can be."

广告史上那些给人留下最深刻印象的广告词里，就有美国陆军的一句：“美国陆军，助你实现所有愿望。”

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You can use the -u option here to suppress printing of identical lines.

在这里您可以使用- u选项来禁止打印相同的行。

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Iran previously rejected a U.N.-mediated proposal along those lines.

VOA: standard.2010.02.03

But no matter where the conflict is or what it's about, if you're serious about peace, you can't take as final the first 'no,' the second 'no' or even the hundredth 'no.'" In her statement, Secretary Clinton promised an "unwavering" U.S.commitment to a two-state solution, based on 1967 lines with agreed land swaps, that will create an independent and viable Palestinian state and an Israel with secure and recognized borders.

VOA: standard.2009.11.25

Such scenes are the front lines of U.S.-based web consulting companies, thrust into global expansion by design--or by circumstances they couldn't control.

FORBES: Innocents Abroad

The network of high-voltage "transmission" lines in the U.S. is rapidly aging and no longer can adequately support the country's growing demand for electricity.

FORBES: Magazine Article

When he took over six of the U.K.'s busiest government-run rail lines in 1997, Branson did little more than apply the Virgin logo to the cars, which badly needed upgrading.

FORBES: Red Baron