英语语法分析

Polar mesospheric clouds are extremely sensitive to changes in atmospheric water vapor and temperature.

云层亮度上升趋势提示大气环境的微妙变化，而这也许和温室气体的变化有关”迪兰如是说。 极地中间层的云对大气中水汽和温度十分敏感。

Polar mesospheric clouds are also known as noctilucent or “night-shining” clouds—a property that is clearly visible in this astronaut photograph.

极地中层云也被称为夜光云层（noctilucent）（就是在夜晚还闪光的云）。 这一特点在这张太空照片上显露无疑。

It is the season for viewing Polar Mesospheric Clouds, and with our high beta-angle we were able to capture this thin layer of noctilucent clouds at sunset (6-25-2010).

到了观看极地中气层云的时候，在太空中使用高β角度，我们能捕捉到日落时刻这层薄薄的夜光云。