短語(yǔ)詞組短語(yǔ)secondary undulation 次波動(dòng);副振動(dòng)tidal undulation 潮振動(dòng);潮位升降undulation point 起伏點(diǎn)local undulation 局部波動(dòng)Chest Undulation 胸部波浪undulation fold 波狀褶皺sand undulation 起伏沙丘stocks undulation 股票風(fēng)云 返回 undulation