receiver can hear it, but unless you have the encryption packet all you hear are the numbers.

VOA: standard.2009.06.06

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

The Eastern Mediterranean regional director of the World Health Organization, Hussein Gezairi pointed out the recommendations of the health ministers would be enforced and that no visas would be granted unless Hajj candidates met all requirements.

VOA: standard.2009.07.23

You also do walking meditation, you can do mantra meditation, you can do all sorts of meditations that can be seen as a step towards maintaining the state of mindfulness at all points of your daily life, which is impossible unless you're a monk for a very long time.

还有行禅，曼怛罗冥想，你可以进行各种冥想修行,都可被视为正迈向,在日常生活的每时每刻,保持警醒，这几乎不可能实现,除非你是修行多年的僧侣。

普林斯顿公开课 - 人性课程节选

"There is a realization at the end of the day that despite all the profits that Russia got from its sale of oil and gas over the last 10 years, that unless it modernizes its economy and reforms it, it will be a declining power."

VOA: standard.2010.06.18