单词	airscrew
释义	airscrew /ˈɛːskruː / noun British An aircraft propeller.In 1480, Leonardo da Vinci drew his famous ‘airscrew’ machine which could never have flown.... Both planes were triplanes with twin tractor airscrews driven by shafts from the fuselage. This helicopter had four lifting airscrews and five auxiliary propellers.
随便看	be an item beano beanpole Bean, Roy beans bean sprouts beanstalk Beantown Beantowner be anyone's be any (or no or much) good be any use be a question of time bear bearability bearable bearableness bearably bear a hand bear a relation (or relationship) to bear a resemblance (or similarity) to bear arms bear away bear-baiting bearberry

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