该组研究人员通过研究化石，发现了后肢长度和骨盆结构变化的证据，这种变化可能使某些黑猩猩更容易直立行走，就像在上述实验中观察到的那只一样。

In the fossil record, the research team found evidence of changes in leg length and pelvic structure that may have made it easier for some chimps, like the one in their study, to stand upright.

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相反的，以蜷曲姿态行走时脚趾深度明显大于脚跟深度，反映出脚掌长度上更快的重量转移。

In contrast, a crouched stride yielded markedly deeper toe impressions than heel impressions, reflecting faster weight transfer over the length of the foot.

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亲密留意出料口型材的行走能否顺畅，当到达型材请求的长度时，开端锯切。

Close attention to the mouth of the material can walk smoothly, when the length of the request to reach the profile, the beginning of sawing.

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