2 a :free from error, fallacy, or misapprehension based onsoundjudicial reasoning b :legally valid asoundtitle 3 :showing good judgment or sense soundlyadverb soundnessnoun sound 2 of 2intransitive verb :to be based or founded:have a specified basis for an action ...
2.细节理解题,根据文中语句“Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.”理解可知。3.细节理解题,根据文中语句“You can make it travel to your ear by using a roll of cardboard”理解可知。
阅读理解。 Have you ever heard an echo of your voice? An echo is a reflected (反射) sound. Stand in a very large empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you.
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An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you. The walls reflect the sounds. These reflected sounds are called “echoes”. ...
8. Music A distinctive style, as of an orchestra or singer. 9. Archaic Rumor; report. v. sound·ed, sound·ing, sounds v.intr. 1. a. To make or give forth a sound: The siren sounded. b. To be given forth as a sound: The fanfare sounded. 2. To present a particular impress...
This essay is a version of a conference presentation in October 2013 at the Eleventh...Busa, ChristopherNorman Mailer SocietyThe Mailer Review
A given flaw in a test object, e.g. a cavity in a casting, represents an obstacle to the sound wave. Information on this flaw can only be obtained either via the reflected wave, i.e. its echo when using the echo method, or by its shadow when applying the
Have you ever heard an echo of your voice? An echo is a reflected(反射)sound.Stand in a very large, empty hall with nothing on the walls.Then shout.The sounds you make will hit the walls and come back to you.The walls reflect the sounds.These reflected sounds are called “echoes”....
, OF. soner, suner, F. sonner, from L. sonare. See Sound a noise.] 1. To make a noise; to utter a voice; to make an impulse of the air that shall strike the organs of hearing with a perceptible effect. “And first taught speaking trumpets how to sound.” Dryden. ...