消防员须身穿保护装置及正压呼吸设施.Firemen should wear proper protective equipment and positive pressure self - contained breathing apparatus.可以工作在正压或负压下, 简单的螺丝刀调节, 多种弹簧可选.They work under pressure or suction. Simple screwdriver adjustmen...
I had no idea of the gaffe which I was committing.我不清楚我犯了什么错误.He didn't realize what a gaffe he'd made.他没意识到自己已出乖露丑.Wuduo stuck out her tongue in dismay at her gaffe.五多把舌伸伸,表示口不关风说错了话....