单词	Archimedes' principle
释义	Archimedes' principleˌArchimedes' ˈprinciple noun [singular] the scientific rule which explains that an object in a liquid is kept up by a force which is equal to the weight of the liquid that the object displaces
随便看	rudderless ruddiness ruddy rude rudely rudeness rudimentary rudiments Rudolph, the Red-nosed Reindeer rue rueful ruefully ruff ruffian ruffianly ruffle rug Rugby rugby Rugby League Rugby Union rugged ruggedly ruggedness rugger

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