I found some powdered battery acid in the engine-room.我在发动机舱里发现了一些粉状的电池酸。Apart from two men on watch in the engine-room, everyone was asleep.除了两个人在机房值班外，其他人都在睡觉。There was a loud explosion in the engine-room, and almost immediately a fire broke out.发动机房里发生了爆炸，一声巨响后随即起了大火。