So the subsidies and mandates offered to renewable sources of power such as wind turbines often just level the playing field.

因此，向可再生动力资源(如风力涡轮机)提供的津贴和要求往往只是平衡竞争环境。

youdao

The immediate cause of the problems is the behaviour of the jet stream, a band of high-level wind that travels east around the world and influences much of the weather below it.

引起这些问题的直接原因是急流[注1]的运动方式 ----在高空、绕地球向东流动并能给下面的天气造成很大影响的一股风。

youdao

The aim of both teams is to tap into high-altitude wind, which is an energy source that is more abundant and reliable than the ground-level wind on which normal turbines depend.

两个研究小组的目的是一致的：利用更加丰富、稳定的高海拔风能发电，而普通的涡轮发电机则依赖于地表风能。

youdao

In both instances, the Met Office failed to predict the movements of the jet stream - the high-level wind that races round the world 10km above the surface.

BBC: Met Office cools summer forecast

The height used for measuring the wind was 10m - far above street level.

BBC: Who, What, Why: What is wind chill factor?

At the pro level, what naturally happens is you see things whittle themselves down where you wind up with a smaller cross-section.

FORBES: Move up http://i.forbesimg.com t Move down