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The products must meet requirements in three different operating modes: standby, active and sleep modes.

这些产品在三种不同的运行模式下(待机、运行、睡眠)必须达到一定要求。

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We hired a second world war Catalina seaplane, one of just three operating in the world, and had to bring in a fire-fighting pilot from Canada to fly it.

我们租了一架二战时期的水上飞机（世界上还在使用的三架这类飞机中的一架），我们还必须从加拿大请来一名消防飞行员来驾驶它。

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Despite Mr Klein's misgivings, Microsoft could bring about a settlement if it took the initiative by volunteering to break itself up, perhaps into an applications company and two or three competing operating-systems companies.

ECONOMIST: The Microsoft case

Twenty-three were nurses, including her operating-room nurses, her recovery-room nurse, and the many ward nurses on their eight-to-twelve-hour shifts.

NEWYORKER: Big Med

Both sides set up with three across midfield operating behind three more attack-orientated players but Chelsea were the superior team and enjoyed the better of precious few early openings.

BBC: Chelsea 2-4 Man City