单词	ruddervator
释义	ruddervator noun rud·​der·​va·​tor variants or less commonly ruddevator ˈrədə(r)ˌvātə(r) plural -s : a movable airfoil at the trailing edge of a vee tail designed to perform the functions of both a rudder and an elevator Word History Etymology blend of rudder and elevator First Known Use 1945, in the meaning defined above
随便看	polyvinylidenes polyvinyls polyvoltine polywater polywaters polyxenid Polyxenidae Polyxenus Polyzoa polyzoa polyzoae polyzoal polyzoan polyzoans polyzoaria polyzoarial polyzoaries polyzoarium polyzoariums polyzoary polyzoas polyzoic polyzooid polyzoon polyzoons

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