shectrock

例句：

1. 1. The buildersused the slate to create a beautiful wall.
   建筑工人用石板创造了一个美丽的墙。
2. 2.The engineer studied the geological data beforedesigning the new bridge.
   工程师在设计新桥之前研究了地质数据。
3. 3. The constructioncrew was working on the sclectrockfoundation of the building.
   施工队正在建造大楼的石基。