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响尾蛇数量以惊人速度减少，与人类活动息息相关！
source link: https://tech.sina.com.cn/d/a/2020-06-19/doc-iircuyvi9274277.shtml
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新浪科技讯北京时间6月19日消息，据国外媒体报道，就像成群的山地摩托车手、徒步旅行者和越野长跑者一样，西部响尾蛇经常长距离移动迁徙，春季从舒适的冬眠巢穴中爬出来，在开阔的地区寻觅食物。然而，最新一项研究表明，生活在加拿大的西部响尾蛇数量正以
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