水可以吸收和释放大量的热量，而温度变化不大，从而创造一个稳定的环境。
Water can absorb and release a lot of heat without big changes in temperature, thus creating a stable environment.
他们可以追踪大陆冰川的生长和收缩，即使是在温度变化不大的海洋区域——比如，赤道附近。
They could trace the growth and shrinkage of continental glaciers, even in parts of the ocean where there may have been no great change in temperature—around the equator, for example.
近地表的地震频率可能高达一个月100次，但每年的平均值变化不大。
Near the surface earthquakes may run as high as 100 in a month, but the yearly average does not vary much.
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