machine rifle造句

• A second later they opened fire , the deeper boom of their pistols accompanied by the sharp tap - tap - tap of the new , compact machine rifles that were so much handier than the army ' s old lewins
  一秒钟后，他们开始射击，手枪低沉的砰砰声，还有轻快的手提机枪的嗒嗒声，与军队的老式利文斯枪相比更加便于手持。