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spot light observation
anim.husb.
点照观测
野生动物数量调查的一种方法
desert.
点照观测
(野生动物数量调查的一种方法,即以一定量光源,在野外夜间照明,并缓慢移动,记录点照范围内所遇的动物,然后进行数量统计)
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