Many mayfly species are clumsy swimmers at best, and combine that with shucking their outer nymph skin, they become a flailing treat for the waiting trout.
很多蜉蝣种拙游泳充其量结合，剥其外层若虫皮肤他们等候治疗退化成为鳟。
Many mayfly species are clumsy swimmers at best, and combine that with shucking their outer nymph skin, they become a flailing treat for the waiting trout.
很多蜉蝣种拙游泳充其量结合，剥其外层若虫皮肤他们等候治疗退化成为鳟。
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