这根大梁承受了上面那一层的全部重量.This beam bears the whole weight of the upper floor.窗框在大梁的重压下垮掉了.The window frame folded up under the heavy weight of the beam.这些大梁是由支架撑着.The girders are carried on trestles....
Computerized reservation systems help airline profits in several ways...电子订票系统通过多种方式帮助航空公司获利。My reservation is supposed to be a double beded room, but this is a twin.我预约的是两张单人床的房间, 但这间是双人的.Seventeen thousand Indians live...