But some nineteenth-century naturalists tried to minimize the significance of adaptation.
但是一些19世纪的自然学家竭力把适者生存的意义说得不重要。
I think it will be admitted by naturalists, without my entering on details, that secondary sexual characters are highly variable.
我想无须详细讨论, 自然学者都公认副性征是高度变异的。
It has attracted explorers and naturalists since the sixteenth century.
它自16世纪以来就吸引了探险家和博物学者。
Field naturalists have observed the activities of weasels for centuries.
地里博物学家几个世纪以来已经观察鼬的活动。
When European naturalists first encountered this bizarre creature, they were understandably baffled.
当欧洲博物学家首次遇到这种怪诞的生物，他们感到费解。
Of course, I'm sure this explanation won't sit well with bonafide naturalists.
当然了，我敢肯定这样的解释不能让真正的博物学家满意。
This fact has led naturalists to believe that the Isthmus was formerly open.
使许多自然学者相信这个地蛱在以前原是开通的。
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