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单词 echolocation
释义

Definition of echolocation in English:

echolocation

nounˈɛkə(ʊ)lə(ʊ)ˌkeɪʃ(ə)nˌɛkoʊloʊˈkeɪʃ(ə)n
mass noun
  • The location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

    Example sentencesExamples
    • The rivers used by most platanistids are muddy, and these animals probably rely on echolocation more than vision to locate their prey.
    • Bats are not the only animals that use echolocation.
    • Horseshoe bats have a special kind of echolocation (termed ‘high duty cycle’), which allows them to use the Doppler shift to detect the flutter of moth wings.
    • Some bats, for example, which navigate by echolocation, both emit and hear sounds with frequencies of more than 100 kHz.
    • It's been known since the 1930s, with the discovery of bat echolocation, that animals can produce pitches too high for human hearing.
    • Toothed whales, such as dolphins, rely on this auditory sense when hunting prey by echolocation.
    • Sharks have an acute electric sense with which they can detect prey, dolphins can detect characteristics of objects from a distance using ultrasonic echolocation, and crabs perceive water depth by sensing water pressure.
    • For example, echolocation by bats and toothed whales is dependent on the sound transmission properties of air and water that can change with temperature or density.
    • Flying foxes use their excellent eyesight more than echolocation, or bouncing sounds, to locate their food at night.
    • Research suggests that noise from whale watching boats may interfere with the animals' echolocation and communication, making it more difficult for them to hunt for fish.
    • Like bats, dolphins use echolocation, an internal sonar system, to help them navigate, avoid predators and find food.
    • Many odontocetes can navigate by echolocation, producing sound waves using a complex system of nasal sacs and passages, and using the echoes to navigate.
    • Moths typically go into erratic dives when they sense that they have been detected by nearby bats using echolocation.
    • This structure may help focus the sound emitted by these animals in echolocation and feeding.
    • You can imagine, for instance, the way certain animals use echolocation to find a target or source.
    • But the whale's skull indicates it couldn't produce ultrasonic signals - meaning it didn't use sonar or echolocation, like some dolphins and certain whales do today.
    • An additional explanation for the absence of either mode in Microchiroptera is their reliance on echolocation, and their need to maintain regular sensory input.
    • But their hearing and echolocation is the greatest almost of any animal.
 
 

Definition of echolocation in US English:

echolocation

nounˌekōlōˈkāSH(ə)nˌɛkoʊloʊˈkeɪʃ(ə)n
  • The location of objects by reflected sound, in particular that used by animals such as dolphins and bats.

    Example sentencesExamples
    • Some bats, for example, which navigate by echolocation, both emit and hear sounds with frequencies of more than 100 kHz.
    • The rivers used by most platanistids are muddy, and these animals probably rely on echolocation more than vision to locate their prey.
    • But their hearing and echolocation is the greatest almost of any animal.
    • Moths typically go into erratic dives when they sense that they have been detected by nearby bats using echolocation.
    • Flying foxes use their excellent eyesight more than echolocation, or bouncing sounds, to locate their food at night.
    • Like bats, dolphins use echolocation, an internal sonar system, to help them navigate, avoid predators and find food.
    • Many odontocetes can navigate by echolocation, producing sound waves using a complex system of nasal sacs and passages, and using the echoes to navigate.
    • Horseshoe bats have a special kind of echolocation (termed ‘high duty cycle’), which allows them to use the Doppler shift to detect the flutter of moth wings.
    • You can imagine, for instance, the way certain animals use echolocation to find a target or source.
    • Toothed whales, such as dolphins, rely on this auditory sense when hunting prey by echolocation.
    • An additional explanation for the absence of either mode in Microchiroptera is their reliance on echolocation, and their need to maintain regular sensory input.
    • For example, echolocation by bats and toothed whales is dependent on the sound transmission properties of air and water that can change with temperature or density.
    • But the whale's skull indicates it couldn't produce ultrasonic signals - meaning it didn't use sonar or echolocation, like some dolphins and certain whales do today.
    • Bats are not the only animals that use echolocation.
    • Research suggests that noise from whale watching boats may interfere with the animals' echolocation and communication, making it more difficult for them to hunt for fish.
    • Sharks have an acute electric sense with which they can detect prey, dolphins can detect characteristics of objects from a distance using ultrasonic echolocation, and crabs perceive water depth by sensing water pressure.
    • It's been known since the 1930s, with the discovery of bat echolocation, that animals can produce pitches too high for human hearing.
    • This structure may help focus the sound emitted by these animals in echolocation and feeding.
 
 
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更新时间:2024/12/23 10:51:16