A carbon-arc spark ignited the air/fuel mixture and spewed it into a tongue of vicious yellow flame 50 feet long.It roasted the pile of 20 pianos.

• 炭弧火花点燃油气混合物，吐出长达50英尺的亮黄黄的火舌，烘烤着20架钢琴叠起的塔楼。