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- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- The mountain rise up in a steep wall of rock. 这座山高而陡，形成一道岩石屏障。
- The mountain rose up in a steep wall of rock. 这座山高而陡，形成一道岩石屏障。
- A spur of rock stuck out from the mountain. 山背上突起一个石脊。
- He managed to persuade us of the workability of the scheme; now we had to persuade the boss. 他设法使我们相信了计划的可行性，现在我们该去劝说老板了。
- He managed to hang on to a piece of rock protruding from the cliff. 他设法抓住了悬崖上向外伸出的岩石。
- They drilled through several layers of rock to reach the oil. 他们钻透了几层岩石以寻找石油。
- Pieces of rock plummeted down the mountainside to the ground below. 岩石一块块顺著山的陡坡滚落到地面。
- During the earth tremor a large piece of rock chopped out of the ground. 在一阵轻微的地震中，一大块岩石突然从地下露出地面。
- We finally got at a ledge of rock near the summit. 我们最后到达了靠近峰顶的一块突出的岩崖。
- The slow movement of rock debris and soil down a weathered slope. 蠕动岩石碎片和土壤沿着受风雨侵蚀的滑坡向下缓慢移动
- A fall of rocks blocked the road. 掉落的岩石把路封住了。
- There are two types of rocks in this area. 这个地区有两种类型的岩石。
- He managed to hang on to a piece of rock protruding from the cliff face. 他设法抓住悬崖表面向外伸出的岩石。
- workability of rock 岩石可采性,岩石的可采性
- An unconsolidated mixture of rock fragments or pebbles. 砾石岩石碎片或卵石的松散的混合物
- The river had been bridged with slabs of rock. 用石板在河上架了桥。
- He managed to persuade us of the workability of the scheme;now we had to persuade the boss. 他设法使我们相信了计划的可行性，现在我们该去劝说老板了。
- There's a bed of rock a few feet below the surface. 地壳以下几英尺的地方便是岩层。
- He managed to persuade us of the workability of the scheme,now we had to persuade the boss. 他设法使我们相信了计划的可行性，现在我们该去劝说老板了。
