Bats face an even greater challenge than people when it comes to picking a single voice from a crowd, Kanwal says.

就从一堆声音中挑选一个声音而言，蝙蝠面临的挑战远远大于人类，Kanwal说。

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It was always hard to envisage getting 27 European countries, each with its distinct history, to speak with a single voice.

即使是想象一下让二十七个有各自不同的历史的欧洲国家以一个声音说话也是很困难的。

youdao

But, happily for Dan Brown fans, the book trade does not have a single voice in charge and it would be illegal to appoint one.

但值得丹•布朗书迷庆幸的是，图书业没有一个主管全行业的发言人，而且任命这样一个发言人是违法的。

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"If senators refuse to debate about a profound crisis affecting every single citizen, the nation must ask 'What do you fear?' ,'And whose voice do you speak and whose interest do you vote?" Republican Mitch McConnell of Kentucky disagreed, saying the bill will make soaring health care costs go even higher, and place a greater burden on average Americans.

VOA: standard.2009.11.23

When asked why, they spoke in a single voice, explaining that using the tactics learned compromised their personal values.

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With YouTube I will have a very small crew, and we are trying to keep focussed on a single voice.

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Businesses often focus on creating a solid stand or a single voice.

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