| 单词 | undulation |
| 释义 | [/ˏʌndjuˈleɪʃn; US -dʒu-; ˏʌndʒəˋleʃən/] n (a) [U] wave-like movement or appearance 波动; 起伏. (b) [C] one of a number of wave-like curves or slopes 波状的弯曲或斜坡: The downs fell in gentle undulations to the sea. 这块丘陵地略带倾斜伸向大海. |
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