不幸的是，现在根本无法预测出特大地震的精确时间、地点和规模，而且似乎永远无法做到。
Unfortunately, predicting the specific time, place, and size of particular large earthquakes is impossible at present, and is probably inherently impossible. Edel Rodriguez
同样，2004年12月印度尼西亚以西海域发生的9.3级大地震也没有被预测到。
That was also the case with the December 2004 earthquake off western Indonesia, which measured magnitude 9.3.
这次大地震的前兆与以往地震的和被预测到地震的前兆有很大的不同。
There were remarkable differences between precursor events of this particular earthquake and those of other predicted earthquakes.
我们一般在大地震发生之后发布海啸预警，并预测海啸的抵达时间，因为海啸速度是由它所经过的水域深度直接决定的。
We issue a warning after a big earthquake, and we can predict what the tsunami arrival times should be because tsunami speed is directly controlled by the depth of the water through which it travels.
不幸的是，现在根本无法预测出特大地震的精确时间、地点和规模，而且似乎永远无法做到。
Unfortunately, predicting the specific time, place, and size of particular large earthquakes is impossible at present, and is probably inherently impossible.
到现在为止，人们通过这个方法已成功预测了两次大地震。
So far, by this means, two major earthquakes have been predicted.
长时间以来地震学家们一致认为，以目前的科学技术，还不能预测地震，而且人类从未准确预知过任何一次大地震。
Seismologists have long concurred, saying the technology doesn't exist to predict a quake and that no major temblor has ever been foretold.
为了降低地震危险性(一定地区在未来一段时间内可能发生破坏性地震的危险程度)和减少地震带来的危害，那么预测一下未来是否有一场大地震，它将在何时何地发生，这就显得很有必要。
In order to reduce the risk of an earthquake and reduce and mitigate its effects, it is necessary to predict where and when a future, large earthquake may occur.
他们表示，在预测大地震有可能发生的位置方面有了一些进步，但他们仍然不能预测地震发生的时间。
They note improvements for indicating where a big quake approximately will occur, but not when.
那么，为什么还没有制定出如何科学预测下一个大地震会发生的时间和地点？
So why hasn't science worked out how to predict when and where the next big quake is going to happen?
地震学家提醒公众，他们的研究仍然无法十分精确。他们表示，在预测大地震有可能发生的位置方面有了一些进步，但他们仍然不能预测地震发生的时间。
Seismologists caution the public that their work is still an inexact science. They note improvements for indicating where a big quake approximately will occur, but not when.
故可以作为一种大地震中期预测的指标。
Therefore, it can be used as an index of medium term prediction for future large earthquakes.
科学家们还无法预测何时会发生大地震。
Scientists cannot yet calculate when there will be a major earthquake.
对一些大地震的发生时段及震级的预测检验效果较好。
The check results of occurrence times and magnitudes of several large earthquakes were satisfactory.
用所建模型进行预测，得到东北地区下一个地震活跃期约于1997年开始，活跃期内可能发生的最大地震为7.2级。
The two models predicted that the next earthquake activity period of Northeast China begin at the year of 1997, and a magnitude of 7. 2 may be take place.
提取海平面地壳垂直形变信息对较大地震的预报和与海洋有关灾害的预测有重要意义。
It is of the important signification to pick-up the information of the crustal vertical deformation for predicting strong earthquake and forecasting oceanic disaster.
提取海平面地壳垂直形变信息对较大地震的预报和与海洋有关灾害的预测等有积极意义。
It has positive significance to extract information of vertical crustal deformation of sea level for predicting larger earthquakes and hazards related to the ocean and so on.
同时指出8.1级特大地震的特殊性和预测预报的困难性。
Finally, the particularity of great earthquake with M8.1 and difficulty of earthquake prediction are showed.
重大地震与地震灾害链预测是当今世界地学前缘课题。
Predictions for severe earthquake and earthquake disaster chain are frontiers of earth science in the world.
海地的地质学家研究2010年的大地震，以更好地预测未来的地震。
Then travel to Haiti, where geologists investigate the 2010 earthquake not long after it struck for clues to how to better forecast future quakes.
本文的目的是预测今后四个月内我国大陆是否有大地震发生。
Our purpose is to forecast the possibility of a large earthquake within the continental territory of our country in the coming four months.
1980年，笔者应用地震对称迁移图象预测了全球大地震，其中包括12项主要预测意见和5项补充预测意见。
In 1980, the author predicted some coming great earthquakes in the world by using the symmetrical migration pattern of earthquake. The prediction consists of 12 principal items and 5 additional items.
不管是美国地质调查局，加利福尼亚理工学院，还是其他的科学家都没有成功预测到过一次大地震。
Neither the USGS nor Caltech nor any other scientists have ever predicted a major earthquake.
正如我们说的当印尼下沉时将会有大地震，但并不是可预测的主要地震，不是8 -9级的。
As we stated there would be large quakes when Indonesia sinks but not the major quakes one would expect not magnitude 8-9.
所以预测大地震须用大视野，即大的时空观。
So, panoramic eyeshot with large spatiotemporal scale is very necessary in predicting large earthquakes.
比如，科学家预测在未来30年内，旧金山湾区发生一次重大地震的概率为67%，而南加利福尼亚的概率是60%。
For example, scientists estimate that over the next 30 years the probability of a major earthquake occurring in the San Francisco Bay area is 67% and 60% in Southern California.
比如，科学家预测在未来30年内，旧金山湾区发生一次重大地震的概率为67%，而南加利福尼亚的概率是60%。
For example, scientists estimate that over the next 30 years the probability of a major earthquake occurring in the San Francisco Bay area is 67% and 60% in Southern California.
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