For instance, cavefish lose their eyes, while parasites like tapeworms lose their guts.
举例来说,洞穴鱼失去了眼睛,而像绦虫一样的寄生虫则失去内脏。
2
The cavefish, on the other hand, remain on high alert, patrolling their habitats even after hours.
而另一方面,穴居鱼仍然保持高度警惕,三更半夜还在居住的地方游来游去。
3
Because the cavefish may not need less sleep-they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.