assiduous

assiduousassiduousD.J.:[əˈsidjuəs]K.K.:[əˈsɪdʒuəs]adj.1.■专心致志的, 勤勉的The book was the result of ten years' assiduous research.那本书是十年苦心钻研的成果。

assiduous[ə'sidjuəs]adj.1.■殷勤的2.■刻苦的，勤奋的，孜孜不倦的3.■坚持不懈的，经常的；一丝不苟地进行的近义词busy

assiduousassiduous[əˈsidjuəs]adj.1.■有恒的; 专心的; 勤勉的(in, at)2.■殷勤的(over)be assiduous in one's duties专心于自己的职守He is assiduous over his visitor.他对来访者很殷勤。