un·du·lateBrE/ˈʌndjuleɪt/NAmE/ˈʌndʒəleɪt/verbpresent simple - I / you / we / theyundulateBrE/ˈʌndjuleɪt/NAmE/ˈʌndʒəleɪt/present simple - he / she / itundulatesBrE/ˈʌndjuleɪts/NAmE/ˈʌndʒəleɪts/past simpleundulatedBrE/ˈʌndjuleɪtɪd/NAmE/ˈʌndʒəleɪtɪd/past participleundulatedBrE/ˈʌndjuleɪtɪd/NAmE/ˈʌndʒəleɪtɪd/ -ing formundulatingBrE/ˈʌndjuleɪtɪŋ/NAmE/ˈʌndʒəleɪtɪŋ/[I] (formal) togoormovegentlyupanddownlikewaves起伏；波动；荡漾◆Thecountrysideundulatespleasantly. 原野起伏，景色宜人。