Succession is influenced by many factors: the nature of the soil, exposure to sun and wind, regularity of precipitation, chance colonizations, and many other random processes.

演替受到许多因素的影响：土壤的性质、暴露于阳光和风中的时间、降水的规律性、偶然的殖民和许多其他随机因素。

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Newly designed giant gravel batteries could be the solution to the on-off nature of wind turbines and solar panels.

新设计的巨型砾石电池可以解决风力涡轮机和太阳能电池板的开关问题。

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We can imagine the unchanging sounds of nature - wind, rain, sea, river - but for us, history is silent.

我们可以想象大自然里永恒不变的声音——风声雨声，或苍海河流的涛声依旧。 然而历史对于我们，却是沉默的。

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But the intermittent nature of wind power can cause just that sort of variability.

ECONOMIST: Compressed air might help to make wind power more reliable

Also, since the necessarily erratic nature of wind power necessitates the development of energy-storage technologies to guarantee continuous supply, wind power can also act as a spur to the development of a hydrogen economy in which cars no longer require petroleum fuel.

ECONOMIST: Regulating radio

The leaders of countries that have spent heavily on solar and wind assumed that the erratic nature of these sources, and that the lack of storage, can be compensated by installing the facilities over a broad geographical area.

FORBES: The EPA's Shocking 'Oops' Moment