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。He was turning to ascend the ladder to the engine room when the ship's fire alarm sounded.他正转身爬梯子到发动机舱去，这时船上的火警响了。Water in the engine compartment is sucked away by a hose.发动机舱里的水由一条软管抽走。