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鱼为什么不停地游
更新时间: 2020-09-22 00:00:00  

1、大部份的鱼类都是用鳃呼吸。鱼会用嘴巴将水吸入,水流经鳃部,再从鳃盖后面的开口流出。由於水分中含有氧气,鱼类可利用它来清洁血液,就像人类从空气中吸取氧气将血液净化的情况一样;

2、快要产卵的鱼也会一直游以增加吸入氧气量;

3、患有鳃部感染病的鱼,有寄生虫,也会令鱼快速游上游下;

4、受惊的与会不停的游。

关键词: 为什么 不停

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