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1·A hand grenade was thrown at an army patrol.

一颗手榴弹被扔向陆军巡逻队。《柯林斯英汉双解大词典》

2·Objective To investigate the X-ray characteristics of humeral spiral fracture cau sed by hand grenade throwing.

目的研究士兵投弹所致的肱骨螺旋骨折的X线特征。