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- The maximum vertical displacement of the top rock is 2.3 mm and that of the bottom rock approximates zero after anchorage concrete being cast. 研究结果表明;浇注锚体混凝土阶段顶部围岩最大下沉位移2.;3 mm;底部围岩竖向位移趋近于0。
- A mining method-caving mining with filamentary hole and bottom column is introduced,which is suitable for the mines that are of low pitch,middle thickness,low value and unstable bottom rock property. 介绍了一种适应缓倾斜中厚低价，且底板岩性不稳固的采矿方法；
- Prices have reached rock bottom. 价格已经到了最低点。
- They sent the enemy ship to the bottom of the sea. 他们把敌舰击沉。
- The child was sitting on the bottom stair. 那孩子正坐在楼梯最下面的一级上。
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- I intend to get to the bottom of it. 这件事我打算寻根究底。
- He was always bottom of the class in maths. 他的数学成绩在班上总是垫底。
- The dregs have settled at the bottom of the bottle. 渣滓都沉到瓶底了。
- Many young rock hounds grow up to be geologists. 许许多多爱好收集岩石的少年，长大后成了地质学家。
- The climber had to negotiate a steep rock face. 那攀登者得攀越一陡峭岩石。
- I fell right to the bottom of the stairs. 我从楼梯上一直摔到楼梯下面。
- The police found a body at the bottom of the lake. 警方在湖底发现了一具尸体。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- His bottom waggle in a funny way when he walk. 他走路时臀部扭来扭去，很可笑。
- The water had worn a channel in the rock. 水把岩石冲出了一条沟。
- The bottom of the boat was rusty. 船底生锈了。
- He dash the glass bowl to bit on a rock. 他对著石块把玻璃碗砸得粉碎。
- The mountain rise up in a steep wall of rock. 这座山高而陡，形成一道岩石屏障。
- There is a pair of scissors in the bottom drawer. 最底下的抽屉里有把剪刀。
