The result is a weighty structure that defies the most troublesome of gusts of wind.
其无遗是一个沉重的结构，无视最麻烦的阵风。
He starts at their beginning with a weighty introduction that looks at fossils dating back to the dinosaurs, the structure of feathers and the evolution of birds.
通过大量介绍恐龙时代的化石，他开始描述最初的羽毛结构和鸟类进化的开端。
He starts at their beginning with a weighty introduction that looks at fossils dating back to the dinosaurs, the structure of feathers and the evolution of birds.
通过大量介绍恐龙时代的化石，他开始描述最初的羽毛结构和鸟类进化的开端。
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