Sundials don't work at night or on a cloudy day!
日晷在晚上或阴天不起作用！
We see the sky is blue, but down in the valley it's darker—it's like on a cloudy day.
我们看到天空是蓝色的，但山谷下面却很暗——就像阴天一样。
It was a cloudy day with variable winds.
那是一个风向变化不定的阴天。
A misty morning does not signify a cloudy day.
有雾的早晨并不代表就是阴天。
The weather forecast says tomorrow will be a cloudy day.
天气预报说明天多云。
Formerly regardless of cloudless day, rainy day, cloudy day, winter.
从前无论晴天，雨天，阴天，冬天。
But who said that a good trip could not be taken place on a cloudy day?
但是谁说阴天就不会有一次好的旅行呐？
Even when there is a cloudy day you should not forget to put on a sunscreen.
即使在阴天，你也不能忘记擦防晒霜。
Whether sunny day, rainy or cloudy days, like your life is always a sunny day!
不管晴天，雨天还是阴天、愿你的生活中永远都是一片艳阳天！
But today's weather is not good, has been a cloudy day, there is still much wind.
不过今天的天气不太好，一直是阴天，还有很大的风。
Han seemed to redden slightly, like the sun suddenly showing through on a cloudy day.
韩学愈似乎脸色微红，像阴天忽透太阳。
It is not uncommon that a sunny morning will turn out to be a cloudy day at this time of the year.
一个晴朗的早晨变成阴天，每年这个时候都并不少见。
I treat the light more like a cloudy day, so less harsh shadow lines and more diffused, soft shadows.
对于光线的问题，我当成是在阴天，所以会有更少的尖锐的阴影线和更加发散、柔和的阴影。
Although it was a cloudy day, temperature was around 75f, but still it was quite comfortable for running.
虽然今天是阴天，温度大约只有七十五华氏，但是还算蛮舒服的。
There are things that bug me and one of them would be seeing a person wearing sunglasses on a cloudy day.
有些事情令我烦恼，其中一件就是在多云天气看到一个戴着太阳墨镜的人。
An old friend used to say to me, "When you are thinking of buying a new house, go and see it on a cloudy day."
一个老朋友曾经告诉我：“当你考虑买一套新房时，就趁阴天的时候过去看房吧。”
And perhaps refine our understanding of whether a cloudy day is indeed, as Shelley called it, "sunbeam-proof."
也许会改进我们的理解：真的是阴天吗？正如雪莱称之为“阻挡阳光的屋顶。”
He believed that he was six years old and it was a cloudy day about to rain and his mother was baking a chocolate cake.
他坚信自己回到了六岁时的某个阴天，似乎马上就要下雨，而他的妈妈正在给他烤一个巧克力蛋糕。
The performances of the solar heating and radiative cooling system were measured under typical sunny day and cloudy day.
实验系统测试了典型晴天和多云天气条件下太阳能集散热辐射板系统的性能。
Scientists have invented a plastic solar cell that can turn the sun's power into electrical energy, even on a cloudy day.
科学家们发明了一种以塑料太阳能电池来把太阳光的能量转换成电能的方法，即使是在阴天的时候也可以做到。
In the condition of that when the light is insufficient (such as in the cloudy day or in the night), we can meet the backlighting problem.
在自然光线不足(阴雨、夜晚)的逆光情况下，要得到较为理想的车牌图像，需要进行人工补光。
Officials say it appears Fossett's single-engine plane slammed straight into a Californian mountain on a cloudy day, killing him instantly.
官方称斯蒂芬的单引擎飞机似乎是在阴天直接撞上了一座加州的山，并导致他不幸身亡的。
Cloudy day when it will open all the Windows absorb light, make the room bright, sunny days to collect solar energy, provide energy for the entire house.
阴天时它会打开所有窗户吸收光线，让房间明亮，晴天时能收集太阳能，为整栋房子提供能量。
We are great because of their dreams. All winners are great dreamers: beside the fire of winter night, on a cloudy day in the rain and fog, dream of the future.
我们因梦想而伟大，所有的成功者都是大梦想家：在冬夜的火堆旁，在阴天的雨雾中，梦想着未来。
At cloudy day, however, the diurnal fluctuation and the vertical distribution of non-ionized ammonia concentration at different water depth have little difference.
大风天气，分子氨含量昼夜变化明显，但垂直分布差别不大。
Soil heat flux from atmosphere to soil is about 5% of net radiation on a clear and cloudy day and soil discharge energy to atmosphere on a rainy day above the same field.
在晴天和阴天大气向土壤的能量传输均维持在净辐射的5%左右，雨天时，土壤热通量为负值。
Soil heat flux from atmosphere to soil is about 5% of net radiation on a clear and cloudy day and soil discharge energy to atmosphere on a rainy day above the same field.
在晴天和阴天大气向土壤的能量传输均维持在净辐射的5%左右，雨天时，土壤热通量为负值。
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