On a windy day, he measured how far he could jump with the wind at his back.

在一个刮风的日子里，他测量了自己在风吹着的情况下能跳多远。

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So on a windy day, the cheapest power comes from wind turbines.

因此在多风的日子，最便宜的电力来自风力涡轮。

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Afterwards we hike through the woods. Kyla has her bear spray, which according to my book is a useful deterrent, though on a windy day 'may disable the user'.

后来，我们在树林里徒步行走，吉拉带着防熊喷剂，据我的小册子介绍说它对阻吓熊很有效，但在有风的天气会失灵。

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Perhaps the government hopes that the issue will just blow away like a bag on windy day.

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Crossing it on a windy day can make your heart skip a beat or two.

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Howard's fame proved as fleeting as skywriting on a windy day.

FORBES: Head in the Clouds