例句 |
Workers used steel beams to brace the roof.工人们用钢梁支撑屋顶。Overhead, the lights showed the old timbers, used to brace the roof.灯光照亮了头顶上支撑屋顶的旧房梁。Intense heat from the fire could have warped and weakened the steel trusses that hold up the roof.大火的高温可能已经使支撑屋顶的钢桁架变得脆弱并发生扭曲。 |