By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.

通过与啮齿动物争夺种子，黑蚂蚁有助于控制啮齿动物的数量，这些啮齿动物会对公众健康构成威胁。

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Researchers at the Black Hat computer security conference in Las Vegas on Thursday showed how hackers could take control over iPhones simply by sending special codes via SMS messages.

上周四在拉斯维加斯举行的Black Hat电脑安全大会上，研究人员展示了黑客简单地通过手机短信发送特定代码就能控制iPhone手机。

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The "TV control interface" occurs in a white box expansion at this level of decomposition, and thus is treated as a black box.

“电视控制接口”就被视作一个黑盒来处理。

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A horse-drawing carriage in snowfalls that cause tires stick out of control with drivers gently toddles the ground and makes a nice pattern of black and white. That's how it used to be done, because he's a myth maker.

比如一辆马车在雪地上前行，但车轮松动,使马车夫不得不在雪地里慢条斯理地行进,这样的黑白画面塑造了很好的形象,这是他以前的做法，因为他是个创造神话的人，他说。

麻省理工公开课 - 电影哲学课程节选

But he has to balance this against a political desire to promote black control of and access to services like electricity and telephones.

ECONOMIST: South Africa

Ms. ANDREA MALIK (Director, Town of Colton Black Fly Control Program): That's a black fly larva.

NPR: Waging a One-Woman War Against Black Flies

This week, Hollinger International's board launched a campaign, including the creation of a poison pill, to stop Lord Black selling control of the firm to the wealthy Barclay brothers.

ECONOMIST: A new use for the poison pill