narrow feathers and weak flight muscles suggest it was not a powerful flier.

狭窄的羽毛和柔软无力的飞翔肌暗示孔子鸟并非是个高超的飞行大师。

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narrow feathers and weak flight muscles suggest it was not a powerful flier.

狭窄的羽毛和柔软无力的飞翔肌暗示孔子鸟并非是个高超的飞行大师。

youdao