The expert estimates that more than half a billion people go to bed hungry every night and some 15 million children die before they reach the age of five because they don't get enough to eat.

这位专家估计，每晚有五亿多人饿着肚子睡觉，约一千五百万儿童因饮食不足不到五岁就都死去。

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According to some expert estimates of current Numbers, the new commitment would mean each side scrapping almost 1, 000 warheads.

据一些专家对当前核武数量的估计，新协议意味着双方各自要销毁的核弹头将接近1000枚。

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Like the estimate figure itself, a value for estimate precision is often not consistent across estimates, particularly when using expert-based methods.

象评估本身一样，评估精度的值在不同的评估下通常也不一致，特别是在使用基于专家经验的方法时。

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Education expert Eric Hanushek estimates that the difference between a great teacher and bad teacher in a child's lifetime earnings is hundreds of thousands of dollars.

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Professor Alex Kemp, a petroleum economics expert at the University of Aberdeen, described the Falklands oil reserve estimates as "optimistic, " adding that even if they are proven, the cost of exploiting them could still be prohibitive.

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Research by Panos Ipeirotis, a computer expert at the Stern School of Business at New York University, estimates that Mechanical Turk alone engages 500, 000 active workers in more than 100 countries, with workers heavily concentrated in two countries: the United States (with 50 percent of the total) and India (with 40 percent).

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