undulate
vi. 起伏，波动；震动；呈波浪形
vt. 波动；使波动；使起伏；使成波浪形
adj. 波动的；起伏的；波浪形的
第三人称单数 undulates
现在分词 undulating
过去式 undulated
过去分词 undulated
例句
As we travel south, the countryside begins to undulate as the rolling hills sweep down to the riverbanks.
随着我们游向南边，乡间的山丘变得连绵起伏与河岸相接。
《柯林斯英汉双解大词典》
Their surfaces undulate to simulate Canada's terrain.
他们的表面是模仿加拿大地形而起伏的。
It also teaches and enables them to undulate their body more.
还可以使初学者加大身体的波浪起伏，学会身体的波动。
