例句與造句

1. many bats emit an echolocation call that contains a narrow frequency range and then analyze returning echoes to navigate and to detect prey
   許多蝙蝠會發(fā)出頻率?圍狹窄的回聲定位呼叫，然后分析回聲來作導(dǎo)航與偵測獵物。
2. a large proportion of the bat's auditory receptors ( hair cells in the cochlea ) and large areas in the bat's brain are devoted to analyzing a narrow frequency range corresponding to a single harmonic of the returning echo
   蝙蝠用很大一部分的聽覺受器（耳蝸中的毛細(xì)胞）與大幅的腦部區(qū)域，來分析一段?圍狹窄的頻率，該頻率正與回聲的一個諧波相符。
3. It's difficult to find return echo in a sentence. 用return echo造句挺難的