fire-proof machine 防火电机 ; 防火式电机
fire foam producing machine 泡沫灭火机 ; 灭火泡沫发生器 ; 灭火泡沫产生器
machine-gun fire 机枪火力
fire proof machine 防火式电机
a burst of machine-gun fire 一阵机关枪声
When the machine guns opened fire, American soldiers began moving up San Juan Hill.
VOA: special.2010.07.15
He taught himself to be a pilot. During World War II, he designed a machine used to train military aircraft crews to fire guns at enemy aircraft.
VOA: special.2009.01.14
They set off a string of bombs that damaged equipment in the machine room and started a fire that authorities rushed to put out.
VOA: standard.2010.07.21
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