(同时抛向某人的)一阵
a lot of similar things or remarks, thrown or shouted at someone at the same time
  a hail of bullets 一阵弹雨 
 The prime minister was greeted with a hail of insults as she arrived at the university. 首相来到大学时遭到一阵辱骂。 
 They army emerged from the castle in a hail of arrows.
 He demanded the senator's resignation with a hail of expletives.
 They were mowed down in a hail of gunfire.
 See also: hail noun