北京钢材大全
At the construction site,I climbed to the top of the furnace to open the valve .When I bent over,my safety helmet which wasn’t being fastened up slipped off. I went down to pick it up and wore it again with its belt fastened. when we wear helmet,we should check whether it has been fastened well.
碧落的海
penthouse ['penthaus] n.1. 小棚屋；(尤指靠在大楼边上搭的)披屋2. 屋顶房间；(豪华的)顶层公寓3. 电梯机器房；屋顶棚4. 单斜顶棚，遮棚，披；雨篷5. (士兵进攻时用的)护身遮棚；(士兵用盾挡在头上连成的)护身盾棚Penthouse ['penthaus] n.《藏春阁》(美国出版的成人杂志)
