But the head of UNICEF, Anthony Lake,says: "Unless we all work harder, there may still be fifty-six million children out of school in two thousand fifteen."

VOA: special.2010.05.20

Jeremy says in the text that the geometric return is always lower than the arithmetic return unless all the numbers are the same.

杰里米在书里说几何平均,总是比算术平均小,当然如果所有数字都一样,两个均值相等

耶鲁公开课 - 金融市场课程节选

So we may live, in your lifetime, to a time when this burden of Southern history may get all but lifted altogether from Southerners, unless we don't forget the Civil War.

也许我们,在有生之年,不会看到这段历史给南方造成的阴影,完全消散,除非我们将内战遗忘

耶鲁公开课 - 美国内战与重建课程节选

What is more, Putin has asserted that Russia will not implement the START II Treaty at all unless and until the U.S. ratifies what the Duma has just done.

CENTERFORSECURITYPOLICY: Putin's Non-STARTer

Several government agencies, including the FTC, lost a pitched battle last year to have the companies voluntarily end all advertising to children unless the food being promoted was healthy fare such as whole grains, fresh fruits or vegetables.

MSN: Spending on food advertising to kids fell in '09 - U.S. FTC

Repealing the individual mandate might be popular, for example, but it will make the insurance market worse unless you repeal all of the other aspects of Obamacare that make insurance more expensive.

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