He also liked to take his sailboat out on the water on windless days, "just for the challenge".
他还喜欢在无风的日子里驾着帆船出海，“只为了迎接挑战”。
The heaviest, which shocked the world, was in 19 because of cold weather and windless conditions, polluted air covered the city.
最严重的是在19年，因为寒冷的天气和无风的条件，污染的空气覆盖了城市，这震惊了整个世界。
Windless weather and favorable tides were required for the landing operations.
无风的天气和有利的潮汐是登陆行动所必须的。
And now in this windless February instant Ihad crossed over into a new phase of living.
如今，在这个无风的二月，我在短暂的瞬间跨越到了生命崭新阶段。
A cool and bright windless night, alone on his back to lie down and quietly watch the stars, the sky.
一个清朗无风的夜晚，独自一人仰面躺下来静静地观赏天上的点点繁星。
But even on windless days the air always smelt of something under-earth: sulphur, iron, coal, or acid.
甚至无风的时候，空气里也带着一种地窖下的什么恶味。
That means it needs to be efficiently stored so it can be utilized on cloudy, windless days and at night.
再生能源需要有效的存储，才能在多云、无风天气及夜晚得以使用。
To prepare for the power fluctuations endemic to renewable energy, we'll need to inventory excess power to use during cloudy, windless afternoons and nights.
为预备可再生能源发电中出现的发电量波动，我们需要储备过剩的电能以保证多云、无风的午后和夜晚的用电。
A tinfoil region on the surface of the aero-generator can be used for solar electrical energy generation in a windless sunny day or a weak-wind sunny day.
在无风或弱风的晴天可以利用其表面的“锡箔”区域进行太阳能发电。
Experts say the miniscule impact wind energy has had on current prices is due to an uncooperative Mother Nature: 2013 has been an unusually windless year so far.
专家说因为大自然母亲的不合作对于对于在当前电价下风能的影响仍是微乎其微的：2013已是不寻常的少风年。
Under windless condition or in gentle breeze, it can be calculated either through outside compound sprinkler tests or with experimental data from single sprinkler test.
在无风或微风条件下，可通过室外组合喷洒试验或依据单喷头试验资料用计算方法求得。
But below a certain density, hair stops insulating and wicks heat off the body instead-helping the elephants get rid of an extra 20 percent of their body heat, especially on windless days.
但当毛发密度低于一定程度时就不再隔热，而是散发身体的热量——大象可通过这种方式散发20%的身体热量，尤其是在无风的日子里。
But below a certain density, hair stops insulating and wicks heat off the body instead-helping the elephants get rid of an extra 20 percent of their body heat, especially on windless days.
但当毛发密度低于一定程度时就不再隔热，而是散发身体的热量——大象可通过这种方式散发20%的身体热量，尤其是在无风的日子里。
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