动物学家研究发现,海燕、暴风鹱和信天翁在3千米外便可寻着那微乎其微的鱼腥味疾飞而去;而常见的雄飞蛾竟能闻到远至11千米处的雌飞蛾释放的一种含有特殊酶的气味;大海中的鲨鱼则能嗅出水中亿分之一浓度的血的味道;而一种群居的欧椋鸟为了杀灭巢中的寄生虫竟“会”借助自己灵敏的嗅觉,在广阔的森林中找到含有某种杀虫物质的树枝草叶来筑巢;一条训练有素的狗更能嗅出皮肤癌的癌细胞 Zoologists have found that petrels, typhus and albatrosses fly away from the tiny fishy smell beyond 3km; while common male moths can smell as far as 11km Moths release a smell containing special enzymes; sharks in the sea can smell the concentration of blood in 1% of the blood; and a group of European starlings in order to kill the parasites in the nest actually “will ”Find a tree with some kind of insecticide in the vast forest to build a nest with its own delicate sense of smell. A well-trained dog can sniff skin cancer cells