Lightning is caused by clouds discharging electricity.
闪电是由云层放电产生的。
The moon was hidden by clouds.
月亮被云遮住了。
Both these devices worked well in sunny climates; but in northern Europe, the sun may be hidden by clouds for weeks at a time, while temperatures vary not only seasonally but from day to night.
这两种装置在阳光充足的气候条件下工作良好；但在北欧，太阳可能一次被云层遮挡数周，而温度不仅随着季节变化，而且还随着昼夜变化。
太阳让云彩遮住了。
乌云使天色变得朦胧暗淡。
The moon was dimmed by clouds and the stars were darkened.
月色朦胧，星辰昏暗。
By clouds and rolling darkness.
云层和铺卷而来的黑暗。
The moon was obscured by clouds.
月亮被云遮住了。
The moon was obscured by clouds.
月亮被云遮蔽了。
Photo 057: Beautiful shadow made by clouds.
图057：阳光落下来，形成美丽的光影。
Unfortunately some parts of the mountains were covered by clouds.
可惜的是部分山峰被云朵遮盖了。
Unfortunately, the eclipse was obscured by clouds and I was left with this.
不幸的是，全食被云搞得很模糊，说完这些我也被遗弃了。
Unfortunately weather was just so - so, so the Matterhorn was always partly covered by clouds.
可惜的是由于天气不是很好，所以马特宏峰总是被部分云朵遮挡住。
The dense peaks erect up high, decorated with primeval forests and embraced by clouds and fog.
这里密集的峰丛耸入云天，山峰上原生性森林密布，山腰云雾缭绕。
The center of our Milky Way Galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas.
我们银河系的中心由于尘埃气体云的阻碍，难以被光学望远镜所窥探。
Flights in several countries in South America have been severely disrupted by clouds of ash spewed into the atmosphere by a volcano in Chile.
智利一座火山喷发，喷到空中的火山灰导致南美几个国家的航班严重受到影响。
When the stars are hidden by clouds, the doves apparently find their way by such landmarks as mountain ranges. coast lines, and river courses.
当星星被云层遮住的时候，鸽子显然是通过山脉、海岸线和河流等地标找到他们的路的。
A curtain of Northern Lights (aurora borealis) shimmers in our atmosphere while at the centre of the image a bright moon is partly obscured by clouds.
北极光好似一张闪烁的幕布悬挂在大气层中，幕布的中央，月亮掩映在云团中。
Transmission of Solar Radiation by Clouds over Snow and Ice Surfaces: a Parameterization in Terms of Optical Depth, Solar Zenith Angle, and Surface Albedo.
云和冰地表云对太阳辐射的传输：用光学厚度，太阳高度角和地表反照率参数化。
The Australian rainforest, concealed by clouds, is a land full of songs and stories of ancestral beings who traveled across the continent at the dawn of time.
这片在云雾中若隐若现的澳大利亚雨林，充满了歌谣和传说，讲述着万物伊始时祖先们横跨大陆的那段时光。
A third volunteer walked at night by the light of the moon. When it was obscured by clouds, he made several turns and ended up heading in the direction he came from.
第三个志愿者在夜晚伴随着月光行进，当月亮被云朵遮盖时，他绕了几个弯，最终还是走到了他原来的地方。
The scattering and reflection of light by clouds are studied by scalar radiative transfer theory. The plane albedos and bidirectional reflectance of clouds are given.
利用标量辐射传输理论，计算了云层对光波的反射与透射，给出了云层的平面反照率和双向反射函数；
When the direct radiation is not blocked by clouds, it is experienced as sunshine, combining the perception of bright white light (sunlight in the strict sense) and warming.
当直接辐射没有被云彩，这是有经验的阳光，结合光明的看法白光(阳光严格意义上的)和气候变暖。
The researchers conclude that galaxies may thus be formed by clouds of gas that are bombarded by streams of matter and energy from black holes—which are building their own homes.
科学家们于是认定，这个星系就是通过吸收宇宙间的散逸物质和黑洞类星体的能量来自我发育的，也就是说黑洞创造了自己的星系。
Although partially obscured by clouds, oil is discernible in two areas, a serpentine slick near the Mississippi Delta, and a large round slick south of the Mississippi-Alabama border.
虽然浮油部分被云笼罩，但在两个区域依稀可辨：一条蛇形油膜带靠近密西西比三角洲、一大片浮油环绕着密西西比以南的阿拉巴马州边缘。
You are the sun, the sun don't lose shine by clouds obscured, and I believe you will overcome all difficulties, out of the woods, out of diseases troubles, and we will always support you.
你就是太阳，太阳不会因为乌云的遮挡而失去光芒，我相信你会冲破一切困难，走出困境，走出疾病的困扰，而我们会永远支持你。
Outlined by rays of sunlight known as crepuscular rays, they are actually shadows cast by clouds near the distant western horizon, the setting sun having disappeared from direct view behind them.
在被称为曙暮辉的太阳光线的照射下，它们实际上是由靠近遥远的西方地平线的云层产生的阴影，此时落日在云层的正后方渐渐隐去。
The rainstorm had ended and the gray mist and clouds had been swept away in the night by the wind.
暴风雨结束了，灰色的雾和云在夜晚被风吹散了。
The rainstorm had ended and the gray mist and clouds had been swept away in the night by the wind.
暴风雨结束了，灰色的雾和云在夜晚被风吹散了。
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