金鱼挺好看,可也很“娇气”。如果弄得不好,甚至换了“新”自来水,也常常会使鱼死去。这是怎么回事呢?原来,这是自来水里的那一点儿氯气闯的祸。氯气是一种黄绿色的气体,人闻多了,也会中毒。我们喝的自来水中,氯气的含量很少,不会使人中毒。自来水厂向水中通入氯气是为了杀死水里的病菌,对人有好处。 Goldfish looks good, but also very “delicate.” If it does not work well, even changing “new” tap water often causes the fish to die. What’s going on? Originally it was the fault of chlorine in tap water. Chlorine is a yellow-green gas, people smell more, but also poisoning. We drink tap water, chlorine content is very small, does not make people poisoned. Waterworks to the water into the chlorine is to kill the bacteria in the water, good for people.