您要查找的是不是：
- bottom assist layer 电压支持层
- The bottom layer is a mixture of sand and clay. 最下面的一层是沙和泥的混合物。
- He assist me with my income tax return. 他帮助我填写所得税申报单。
- 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。
- Jack used to assist Mary in her lessons. 杰克过去常常帮助玛丽学习功课。
- 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。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- 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。
- His bottom waggle in a funny way when he walk. 他走路时臀部扭来扭去，很可笑。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- The bottom of the boat was rusty. 船底生锈了。
- He asked us to assist him in carrying through his plan. 他请求我们帮他完成他的计划。
- There is a fine layer of dust on the desk. 桌子上有一层薄薄的尘土。
- There is a pair of scissors in the bottom drawer. 最底下的抽屉里有把剪刀。
- 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。
