Wind and solar energy are variable by nature: the sun doesn't always shine, and the wind doesn't always blow.

风能和太阳能随大自然而变化：太阳并不是总有光芒，风不是一直在吹。

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Renewable sources of energy such as wind and solar power are intermittent. The wind doesn't always blow; the sun doesn't always shine.

再生能源是间歇性的，比如风能、太阳能：没有常刮的风，也不会总是阳光灿烂。

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Because it is always shine gold!

因为是金子总是会发光的！

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But experts note that even renewables need conventional backup, since the sun doesn't always shine and the wind doesn't always blow.

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As always, some examples of extreme personal heroism shine out, such as the coach, Frank Hall, who chased the boy away and saved countless other lives.

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Within any data set there is always a star and so as inventories adding 1.4% it was their turn to shine.

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