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1·As September has the clear sky and fresh air, it is a very good time to climb the mountain.

由于九月有晴朗的天空和新鲜的空气，这是一个很好的爬山时间。

2·This was a thunderbolt out of a clear sky.

这是晴天霹雳。

3·The news was like a thunderbolt out of a clear sky.

这消息犹如晴天霹雳。《新英汉大辞典》

4·The clear sky promises fine weather.

晴朗的天空预示着好天气。

5·The clear sky promises fine weather.

天空晴朗无云，看来天气会很好。

6·The clear sky promises fine weather.

明净的天空说明要有好天气。

7·That autumn day had a great clear sky.

那个秋天的日子天气很晴朗。

8·There are some white clouds in the clear sky.

晴朗的天空中飘着几朵白色的云彩。

9·I learned that Beijing will have a clear sky.

我学到北京将会有干净清爽的天气。

10·Moonlight and Clear Sky, the Fundamental things.

月光和夜空，两个基本条件。

晴空

1·Compared to the image acquired the previous day, Alex appears tighter, with fewer areas of clear sky or thin clouds within the body of the storm.

与前一天获得的图像相比较，阿莱克斯变得更为紧密，在暴风内很少见到有晴空或者薄云层的区域。

2·He stood beside her peering up at the clear sky.

他站在她的身旁，凝视着晴空。

3·Based on the analysis, the increasing of ozone in troposphere can lead to almost positive clear sky radiative forcing at top of atmosphere.

通过对比模拟发现：对流层中臭氧的增加基本使大气顶晴空辐射强迫为正；

4·During the calculation, the relative humidity, wind speed, and air-sea temperature difference in clear sky were considered. Finally, the heat fluxes value was obtained.

并对深入到陆地的象山港海域的热通量进行了计算，计算过程考虑了晴空情况下相对湿度，风速，海气温差等的影响，得出了该海区的热通量数值。

5·Not the important cause has rains and winds to chop about for today, feel hope can not clear sky.

不要因为今天有风雨骤变，就感觉盼不得晴空。