having a shape like a wave or moving up and down like a wave 波浪形的；波动的；起伏的 undulating countryside/fields/terrain/ground 起伏不平的乡野／田野／地势／地面 The land is gently undulating. 土地正在轻轻起伏。 undulating flight/movement/motion 颠簸的飞行；波浪形的移动／运动 an undulating form/shape/surface 起伏的形式/形状/表面
Oxford Collocations DictionaryUndulating is used with these nouns:- hill