为了估计池塘中某种鱼的数量先从池塘中捞起100条鱼挂上标志后放回池塘数天后再从塘中捕到这种鱼300条其中有标志的有10条在理想状态 Template




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tomski为了估计池塘中某种鱼的数量先从池塘中捞起100条鱼挂上标志后放回池塘数天后再从塘中捕到这种鱼300条其中有标志的有10条在理想状态 coloring