meili 发表于 2022-10-18 21:46:26

揭秘人类为何直立行走-英语点津

<p>揭秘人类为何直立行走</p><p><span word="Humans">Humans</span> <span word="walk">walk</span> <span word="upright">upright</span> <span word="to">to</span> <span word="conserve">conserve</span> <span word="energy">energy</span></p>
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