| 词汇 | bolt upright |
| 释义 | bolt upright adverb uk/ˌbəʊlt ˈʌp.raɪt/ us/ˌboʊlt ˈʌp.raɪt/ 直立地 vertical and very straight Suddenly she sat bolt upright as if something had startled her. 她突然直挺挺地坐了起来，好像受了惊吓似的。 |
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