The two sides exchanged smallarmsfire for about three hours.
双方用轻武器交火大约有3 个小时。
《柯林斯英汉双解大词典》
2
The day before, another patrol had been engaged by accurate smallarmsfire in the same area.
在此前一天，另一个巡逻队员在同一地区遭到了小型的武器的准确射击。
3
The trio were working with special forces carrying out a routine security patrol with Afghan forces when their vehicle was struck by a bomb blast and came under smallarmsfire.