High thin clouds are very transparent to solar radiation, like clearair.
太阳辐射可以轻易地通过高空薄云层，就像通过空气一样。
2
It seemed to hold the moonlight in suspension, rendering it more pervasive than in clearair.
那层雾似乎使月光悬浮起来，让那层雾比在晴朗的天气里显得更具有弥漫性。
3
They need to be certain of several hours of clearair as it will take two hours for an initial reconnaissance team to reach the area where the missing men are.