高层云

"They are becoming brighter and seem to be coming to lower latitudes than in the past," James Russell, principal investigator for NASA's Aeronomy of Ice in the Mesosphere satellite, said last week at an American Geophysical Union meeting in San Francisco.

&这些云已经开始变得更亮，而且比起从前它们有逐渐向低纬度地区移动的趋势，&美国国家航天局冰高层大气中间层卫星首席研究员James Russell在上周于旧金山召开的的美国地理联盟会议上谈到。

Volcanoes also inject water vapor into the upper atmosphere, which can lead to night-shining clouds.

火山把水蒸气注入到高层大气之中，可以导致夜光云。

Ice sometimes forms flat, six-sided shaped crystals as it falls from high-level clouds.

当冰从高层的云落下时，有时会形成平板，形状像是停止号志的冰晶。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。