bolt upright怎么读，是什么意思，单词翻译、读音

英语单词:bolt upright

意思翻译

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。