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- the roof of coal roadway 煤巷顶板
- The stone made a dent in the roof of my car. 我的汽车顶让石头砸了个坑。
- The roof of our house is covered by shingles. 我家的屋顶是用木瓦铺的。
- The roof of the old house caved in. 那栋旧房子的屋顶塌下了。
- The roof of the schoolhouse is covered with snow. 校舍的屋顶上覆盖着积雪。
- We heard the rain spattering down on the roof of the hut. 我们听到雨滴滴答答打在小屋的顶上。
- The roof of that house caved in during the severe storm. 狂风暴雨中那房子的屋顶倒塌了下来。
- The roof of the mine caved in as a result of the explosion. 由于发生爆炸，矿井顶部坍塌了。
- On the roof of coal bed are consists of the mudstones in dark-gray or grizzle which will expand met water and wet air, with higher expansion stress and coefficient. 煤层顶板为深灰色和灰色泥岩，该岩石遇水和潮湿空气产生膨胀，膨胀应力和膨胀率大。
- The roof of the tunnel caved in (on the workmen). 隧道顶坍塌(压住工人).
- A shower of rocks and stones rattled on the roof of the dug-out. 一阵岩块和石子噼噼啪啪地打在掩蔽部的顶上。
- The roof of the tunnel was supported by wooden props. 坑道顶用木柱支撑。
- The moon is over the roof of our house. 月亮在我们屋顶的正上方。
- The roof of the house pitched at a 45°angle. 屋顶倾斜四十五度。
- The heavy rain has penetrated the roof of my house. 大雨渗透了我家的房顶。
- A web of palm branches formed the roof of the hut. 构成草屋顶棚的网状结构
- The roof of the old house will cave in any time. 这所老房子的屋顶随时会塌下来。
- roof of coal roadway 煤巷顶板
- By means of similarity-simulation test the authors have studied the displacement law of surrounding rock in coal roadway supported by the roof trusses,bolt-mesh shoterete and H-beam steel. 通过相似模拟试验，研究煤巷采用组合桁架锚杆、锚架网和工字钢支护时的变形玻坏规律，由此对比分析探讨组合桁来锚杆的支护效果。
- The roof of the house pitch at a 45 degree angle. 屋顶倾斜四十五度。
