基本解释仰卧起坐英汉例句权威例句He instructs runners to keep a straight upper body and a "crunch" going in their lower abdominal muscles.NPR: Chi Runners Poised for Softer Landingsabdominal crunch更多例句词组短语短语abdominal crunch board 多功能腹肌训练器abdominal crunch更多词组英英字典柯林斯英英字典 &rarrsame as sit up abdominal crunch剑桥字典abdominal crunch柯林斯字典专业释义医药科学仰卧起坐