| 单词 | switchback |
| 释义 | switchback /swich"bak'/, n. 1. a highway, as in a mountainous area, having many hairpin curves. 2. Railroads. a zigzag track arrangement for climbing a steep grade. 3. Brit. See roller coaster. v.i. 4. (of a road, railroad track, etc.) to progress through a series of hairpin curves; zigzag: The road switchbacks up the mountain. [1860-65, Amer.; SWITCH + BACK2] |
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