Bats feed regurgitated blood to those who have not collected blood themselves, and in return, they themselves may someday benefit from a similar donation.

 
  • 蝙蝠回吐血液给那些没有自己采集血液的蝙蝠,作为回报,它们自己可能有一天受益于类似的捐助。
今日热词
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