Everyday English: rocket scientist

rocket scientist 聰明的人
You don't have to be a rocket scientist to solve this problem.
你不必成為一個聰明的人已經可以解決這個問題。

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Everyday English: road hog

road hog 開車行駛在道路中央的自私司機
He is a road hog and should never be allowed to drive a car.
他是一個自私司機，不應該被允許駕駛汽車。

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Our apps:

English Grammar - Preposition Free version
https://play.google.com/store/apps/details?id=tc.engsoft.QA_free
English Grammar - Preposition Full version
https://play.google.com/store/apps/details?id=tc.engsoft.QA

English Grammar - Phrasal Verb Free version
https://play.google.com/store/apps/details?id=tc.engsoft.QA2_free
English Grammar - Phrasal Verb Full version
https://play.google.com/store/apps/details?id=tc.engsoft.QA2
English Grammar - Idiom Free version
https://play.google.com/store/apps/details?id=tc.engsoft.QA3_free
English Grammar - Idiom Full version
https://play.google.com/store/apps/details?id=tc.engsoft.QA3