您要查找的是不是：
- With bottom protection, the stability and possible destructive zone of bottom and slope of the cushion pool are studied according to time-average pressure, fluctuating pressure and uplift force. 在水垫塘平底板（护底）情况下，根据测试出的时均压力、脉动压力和上举力分布分析了底板及边坡的稳定性，以及可能破坏的范围；
- Flume Test on River Bottom Protection Works 河床护底工程水槽试验
- river bottom protection and roughness addition 护底加糙
- lining slope but no bottom protection 护坡不护底
- 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。
- 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。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- 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。
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- His bottom waggle in a funny way when he walk. 他走路时臀部扭来扭去，很可笑。
- The bottom of the boat was rusty. 船底生锈了。
- There is a pair of scissors in the bottom drawer. 最底下的抽屉里有把剪刀。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- Prices have reached rock bottom. 价格已经到了最低点。
- Every indication show market get near bottom now. 所有迹象表明，目前市场价格已跌落低谷。
- She knocked the bottom out of our argument. 她把我们的论点驳得体无完肤。
