Blue Whales 101 | Nat Geo Wild · English listening exercise (intermediate level)

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Vocabulary

decibel Trans. IMG
- a unit used to measure the intensity of a sound
earwax Trans. IMG
- a waxlike substance produced inside the ear
exterminate Trans. IMG
- to destroy or kill (a group of animals, people, etc.) completely
gravity Trans. IMG
- the force that attracts a body toward the center of the earth
jackhammer Trans. IMG
- a heavy tool used to break hard substances (such as concrete) into pieces by a repeated pounding action
krill Trans. IMG
- very small creatures in the ocean that are the main food of some whales
vocalization Trans. IMG
- to make a sound with the voice

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Blue Whales 101 | Nat Geo Wild