| 单词 | undulation |
| 释义 | undulation /un'jeuh lay"sheuhn, un'dyeuh-, -deuh-/, n. 1. an act of undulating; a wavelike motion. 2. a wavy form or outline. 3. one of a series of wavelike bends, curves, or elevations. 4. Physics. a. a wave. b. the motion of waves. [1640-50; UNDUL(ATE) + -ATION] |
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