作业帮because they fly so much,they have poorly developed feet.的翻译
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because they fly so much,they have poorly developed feet.的翻译
because they fly so much,they have poorly developed feet.的翻译
because they fly so much,they have poorly developed feet.的翻译
因为他们经常飞行,所以脚力不行（脚力发育迟缓）.