| 单词 | echolocation |
| 释义 | echolocation (once / 656629 pages) n Echolocation is what some animals use to locate objects with sound rather than sight. Bats, for example, use echolocation to find food and avoid flying into trees in the dark. Echolocation involves making a sound and determining what objects are nearby based on its echos. Many animals use echolocation, including dolphins and whales, and humans do as well. Some blind people use taps or clicks and the resulting sound waves to navigate, and sonar uses echolocation to steer submarines through deep, dark water. The noun echolocation dates from the mid-twentieth century, a combination of echo, from the Greek ekhe, "sound," and location, with the Latin root locus, "a place." WORD FAMILYecholocation USAGE EXAMPLESBats have eyes and vision, though their nocturnal feedings require an evolved sense of echolocation. Washington Times(Nov 25, 2016) Bats’ echolocation ability has been studied for many years, partly because of its applications to sonar and radar. Nature(Nov 17, 2016) Knowing that whales use echolocation — sending out clicks of sound that bounce off objects in the environment around them — they placed microphones underwater and listened. New York Times(Nov 09, 2016) n determining the location of something by measuring the time it takes for an echo to return from it Syn|Hyper echo sounding fix, localisation, localization, locating, location a determination of the place where something is |
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