慢速英语:Nobel in Chemistry Goes to Makers of “World’s Smallest Machines”(翻译)

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tiny – adj. very small​

ring – n. an object in the shape of a circle

axle – n. a long, straight object on which a wheel or other wheels turn

blade – n. a flat, turning part that is used on some machines to push air or water

medal – n. a piece of metal often in the form of a coin with designs and words in honor of a special event, a person, or an achievement

diploma – n. a document given in recognition of something

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