考研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,尽管人类已经直立了数百万年,但我们的脚和背部仍在与两足动物的姿势作斗争,无法轻易承受过大四肢带来的反复压力。
2008年全国硕士研究生招生考试英语试题
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