游泳运动员菲尔普斯谈节约用水

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toothpaste – n. a product that is used for cleaning teeth

conservation – n. the protection of something

brush – v. an act of cleaning or smoothing something with a brush

drain – n. something (such as a pipe) that is used for removing a liquid from a place or container

faucet – n. a device that is used to control the flow of water from a pipe

pick up – v. to gain possession; to learn by watching

allow – v. to permit or let