查人人中国名人网芒果牛奶冻的做法:高手帮忙！！！拜托
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/02 02:31:32
The champions of hearing,by any standard,are the bats.Bat sounds long went undetected by man becouse they are pitched two to three octaves above what we can hear.But to a number of bats flying around on a calm, still summer evening--and to the unfortunate moths that can hear them and must try to avoid them--the evening is anything but calm.It is a madhouse of constant screaming.Each bat sends out series of screams in short pulses,each lasting less than a hundredth of a second.
在任何标准下,蝙蝠是听力最好的动物.蝙蝠的声音人类无法探悉,因为蝙蝠所发出的声波比人类所能感知的音阶还要高2-3个.蝙蝠常常成群结队地在夏日宁静的夜晚到处飞翔,那些不幸的飞蛾到处逃窜因为他们能在宁静的夏日听到蝙蝠的声音,那是一种连续的尖叫,每个蝙蝠发出一系列短的脉冲,每个都持续百分之一秒.
听力的冠军,由任何标准,是棒。他们被投二到三八音度在的棒声音长期去未被发现由人becouse 什么之上我们能听见。但对一定数量的棒飞行在安静, 仍然夏天晚上-- 和对听见他们和必须设法避免他们-- 的不幸的飞蛾晚上是绝不是安静。这是madhouse 恒定尖叫。各根棒派出尖叫系列在短的脉冲,每个持续较少比百分之一一秒钟