在八十年代早期,我花了很多时间往返于韦科和埃尔帕索之间。
I spent a lot of time in the early Eighties travelling between Waco and El Paso.
在克雷默早期的研究中,他发现被关在笼中的候鸟在它们通常开始在迁徙的大致时间会变得非常不安。
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
一些科学家推测,火星在早期很长时间里可能都有以河流、湖泊,甚至海洋装点着它的表面。
Some scientists speculate that Mars may have enjoyed an extended early period during which rivers, lakes, and perhaps even oceans adorned its surface.
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