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来源:雅诚德英语网
In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing-like membrane.
翼龙的每个前肢都有一根长长的第四指,支撑着像翅膀一样的膜。
In pterosaurs a greatly elongated fourth finger of each forelimb supported a wing-like membrane.
翼龙的每个前肢都有一根长长的第四指,支撑着像翅膀一样的膜。