It has been difficult to estimate the possible wave heights of any tsunami - the waves may not arrive at all or could be as high as 10 metres above normal sea level.

海啸可能达到的波高向来很难估计-海浪可能根本无法到达，或者可高达超出海平面10米。

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Now it has been given a stamp of authority by America's 16 spy agencies in a partially-published "National Intelligence Estimate".

现在美国16个情报机构在一份部分出版的“国家情报评估”给予了权威的证实。

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While this estimate has been accused of being understated (and it is worth noting that the Environmental Protection Agency came to an even lower estimate), it presented a baseline for analysis.

然而，这一预计被指责为过于乐观(环境保护局给出的预计甚至更低)，它所代表的只是分析的底线。

youdao

Because these reactions are understood, it has been possible to estimate the number of electron-neutrinos that should emerge from our star.

BBC: SNO, SNO

But it has been forced to revise downwards its estimate of the overall state of economy after it admitted that it had not included some figures in the latest estimates for GDP that would bring down the growth rate further.

BBC: Japan's economic puzzle

But Treasury rules do require it, and the Treasury's position has been upheld by the courts, which have ruled that an estimate of what might be recovered isn't enough for a taxpayer to claim his losses.

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