undulate['ʌndjuleit]vt.1.■使波动；使起伏：They danced not with their legs or arms, but with their entire bodies, undulating their abdomens.他们跳舞不是用腿和臂，而是用整个身子，腹部一起一伏地扭动着。2.■使成波浪形；使成波状表面vi.1.■波动；起伏2.■呈波浪形；呈波浪面adj.1.■[亦作 undulated] 波状的,起伏的变形vt.undulatedundulating