Wind energy requires a certain amount of sustained wind speeds to be effective.

风能需要一定量的持续风速才能起作用。

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A natural way to think of it would be analogous to the saffir-simpson hurricane scale that is based on maximum sustained wind speed.

一种自然的思考方式是比照基于最高持续风力的萨菲尔—辛曾森飓风等级。

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Since it is sustained by the wind and tide energy input to the oceans, diapycnal mixing coefficient (DMC) will vary along with the change of external energy input.

海洋中的混合过程是由风和潮汐输入的机械能维持的，这些机械能的变化会导致海洋中混合率的变化。

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In October the Guernsey Farmers' Association announced a fall in milk yields due to sustained wind and rain and poor crop harvests.

BBC: Guernsey organic milk production suspended

Some were unscathed but sustained wind damage.

CNN: Officers from across the country join forces in New Orleans

The international trend towards greater renewable-energy deployment points to a sustained period of wind turbine investment, with equipment purchases expected to more than double by 2025.

FORBES: World's Wind Turbine Markets Keep Trucking, Mostly