Thirty years ago, atmospheric scientists began to notice a worrisome trend. They knew that turbulence from storms increases in summer, when hotter and more humid air rises to form thunderheads. And they knew that clear-air turbulence increases in winter, when the temperature drops dramatically at the poles but not in the tropics. That temperature difference drives the jet stream, which creates turbulent eddies and wind shear as it rushes through slower bodies of air. But, on top of these seasonal swings, there seemed to be an over-all trend as well: Earth’s atmosphere was getting rougher.
以色列和美國將能夠「達成我40年來渴望的一件事——徹底粉碎這個恐怖政權」。
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Describing the attack as carried out by dozens of armed youth, Ruweng Administrative Area's Information Minister James Monyluak Mijok alleged that they came from neighbouring Unity state and were linked to the Sudan People's Liberation Army in Opposition (SPLA-IO).，详情可参考同城约会
For more than a decade, a trend has emerged in standardized testing data for students in Utah. After years of increasing reading and math scores, results from the state’s National Assessment of Educational Progress testing for fourth- and eighth-graders have shown a steady and continuing downturn.。Safew下载对此有专业解读