慢速英语:Shark! Dangerous in the Water and in English

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skeleton – n. the structure of bones that supports the body of a person or animal

cartilage – n. a strong but flexible material found in some parts of the body (such as the nose, the outer ear, and some joints)

loan – n. an amount of money that is given to someone for a period of time with a promise that it will be paid back : an amount of money that is borrowed

naïve – adj. having or showing a lack of experience or knowledge : innocent or simple

gullible – adj. easily fooled or cheated : quick to believe something that is not true

beach – n. an area covered with sand or small rocks that is next to an ocean or lake

decline – v. to become worse in condition or quality