We talk about this fight-or-flight idea.
我们谈论的是关于战-或-逃的观念。
The idea is to circle the globe in five stages, each taking four or five days of continuous flight (which is about as much as a pilot could endure).
这个环球飞行计划分为五个阶段,每个阶段用时四到五天(这也是一个飞行员所能忍受的极限了)。
In a recent paper, Dr. Dial and a graduate student, Brandon E. Jackson, presented a novel idea about how some dinosaurs used their proto-wings - a possible step in the evolution of flight.
在其最近的一篇论文中,戴尔博士和一个研究生布兰登·e .·杰克逊提出了关于某些恐龙是如何使用它们的原生翅膀——向飞行进化的可能步骤——的新观点。
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