现代英语与500年前的英语相比有很大地不同。
The English of today is very different from the English of500 years ago.
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.
有时因属于不同大地构造阶段而相互间差距很大。
Sometimes, they have long gap as they belong to different geotectonic stage.
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