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。
2
Two wing-like lobes4 create the shape of the trap.
两个翼状的圆裂片构成陷阱。
3
The ships would tow hydropower generators consisting of two wing-like underwater blades that would be made to oscillate by the force of the water as they plough through it.