长难句_S78

Moreover, even though humans have been upright for millions of years, our feet and back continue to struggle with bipedal posture and cannot easily withstand repeated strain imposed by oversize limbs.





此外，尽管人类已经直立行走几百万年了，但我们的脚和背部始终在和双足直立姿势作斗争，并且很难承受巨大肢体带来的持续的压力。