每个人身上都会产生含有异味的化学物质。体味因人而异,对蚊虫的作用也有所不同。有些人的体味招引蚊子,其汗液中含有大量招蚊子的化学物,如乳酸;有些人的体味则不受蚊子欢迎;其汗液会分泌一些能掩盖掉乳酸气味的化学物质,令蚊子不愿靠近。英国科学家做了一个实验。他们设计了一种Y形的大试管,试管内放入一些蚊子,然后让两位志愿者用手 Everyone has a smell of chemicals. Body odor varies, the role of mosquitoes are also different. Some people’s taste to attract mosquitoes, sweat contains a large number of chemicals to attract mosquitoes, such as lactic acid; some people’s body odor is not welcomed by mosquitoes; sweat will secrete some of the chemical substances that can mask lactic acid odor, so that mosquitoes do not want to get close . British scientists did an experiment. They designed a large Y-shaped tube, put some mosquitoes in the tube, and let the two volunteers use their hands