具体来说,蚊子能够靠人体释放的二氧化碳找到它们叮咬的对象。当我们呼气时,从肺里呼出的二氧化碳并非立即与空气混合,而是暂时形成类似于面包粉的团块状气流,而蚊子会跟踪这种气流。
plume [pluːm]:n.羽毛;羽毛装饰物;(尤指污染物)一团物质
"Mosquitoes start orienting themselves to those pulses of carbon dioxide and keep flying upwind as they sense higher concentrations than the normal ambient air contains," said Joop van Loon, an entomologist at Wageningen University in the Netherlands. Using carbon dioxide, mosquitoes can lock onto targets from up to 164 feet (50 meters) away.
荷兰瓦赫宁恩大学的昆虫学家约普·范隆说:“蚊子开始自我定位,跟踪那些二氧化碳气流,并在它们感觉到二氧化碳浓度比正常环境空气的浓度高时保持逆流飞行。”利用二氧化碳,蚊子可以锁定164英尺(约合50米)以外的目标。
upwind[ʌp'wɪnd]:adv.逆风地
ambient air:环境空气
entomologist[,ɛntə'mɑlədʒɪst]:n.昆虫学者
Things start getting personal when mosquitoes get about 3 feet (1 meter) away from a group of potential targets. In close quarters, mosquitoes take into account a lot of factors that vary from person to person, including skin temperature, the presence of water vapor and color.
当蚊子飞到离一群潜在目标大约3英尺远时,就开始区分每个人的不同情况。在近距离时,蚊子考虑很多因人而异的因素,包括皮肤温度、水汽的存在和颜色。
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