读研的日子，远比她想象中更辛苦，原典阅读艰涩，许多篇章往往要反复诵读十余遍，才能勉强领会其意，按照教学安排，每半个月向导师汇报一次，年轻同学可以熬夜讨论，她却要计算家庭与学业的时间分配。
Swenson’s glider was an exquisite instrument for detecting turbulence. A jumbo jet can weigh upward of half a million pounds and fly more than five hundred miles an hour. It charges through the air like an ocean liner, barely registering most winds. This glider wasn’t much heavier than a Harley and it was moving about as fast—fifty to seventy miles an hour. It felt every bump. Small aircraft account for many of the injuries caused by turbulence and, essentially, all of the deaths—about forty a year. They fly at the mercy of the wind.
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。是该领域的重要参考
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