当飞行员展示蛇吃大象的照片时，成年人只把它看作一顶帽子。
When the pilot shows his picture about the snake eating the elephant, adults only see it as a hat.
这张照片是关于一只小狮子鬃毛水母，发形霞水母属，背景是一名潜水员。
The photo is about a small lions mane jellyfish, Cyanea capillata, with a diver in the background.
为了对数量进行精准的估计，研究人员不能只根据照片的数量进行核算，因为相机很有可能是由其他的动物引发传感器而发生的，比如猴子或者豹。
To arrive at a population estimate, the researchers can't just count the number of photographs, because the cameras are triggered by all sorts of things, like monkeys or leopards.
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