| 单词 | undulate |
| 释义 | undulate —undulator, n. v. /un"jeuh layt', un"dyeuh-, -deuh-/; adj. /un"jeuh lit, -layt', un"dyeuh-, -deuh-/, v. , undulated, undulating, adj. v.i. 1. to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement: The flag undulates in the breeze. 2. to have a wavy form or surface; bend with successive curves in alternate directions. 3. (of a sound) to rise and fall in pitch: the wail of a siren undulating in the distance. v.t. 4. to cause to move in waves. 5. to give a wavy form to. adj. 6. Also, undulated. having a wavelike or rippled form, surface, edge, etc.; wavy. [1650-60; < L undulatus waved, equiv. to und(a) wave + -ul(a) -ULE + -atus -ATE1] |
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