• vi. 起伏，波動；震動；呈波浪形
• vt. 波動；使波動；使起伏；使成波浪形
• adj. 波動的；起伏的；波浪形的

來自拉丁語unda, 水，水波，詞源同abound,inundation,water, 字母w脫落。

undulate

undulate: [17] Undulate goes back ultimately to Latin unda ‘wave’, source also of English inundate [17], redundant, and surround. This in turn was descended from the Indo-European base *ud-, which also produced Greek húdōr ‘water’ (source of the English prefix hydro-), and variants of which lie behind English vodka, water, and wet.
=> abound, inundate, redundant, sound, surround

undulate (v.)

"to move in waves," 1660s, back-formation from undulation. Related: undulated, undulating.

1. As we travel south, the countryside begins to undulate as the rolling hills sweep down to the riverbanks.

我們一路南行，鄉間開始變得起伏不平，綿延的山巒一直延伸到河岸。

來自柯林斯例句

2. To undulate more freely, keep you hands about shoulder width apart.

要波動的更自由些, 保持你的手與肩膀同寬.

來自互聯網

3. The species is characterized by its long and lanceolate leaflets with undulate teeth.

本種以它的長和披針形的小葉具波狀的齒為特點.

來自互聯網

4. Put forward disposal idea and prevent measurement for quality abnormity undulate appears in entire produce process.

對生產全過程出現的質量異常波動提出處理意見和預防糾正措施.

來自互聯網

5. The way of reckoning for power supply now, makes the linerate undulate greatly at different period.

目前的供售電結算方式, 使供售電量不同期,線損率大幅波動.

來自互聯網