您要查找的是不是：
- rotation dredging drill 旋转挖泥钻
- They are dredging for the dead body. 他们在捞尸体。
- At six we were fallen in for drill. 六点钟我们站好队准备操练。
- The seasons follow each other in rotation. 四季循环交替。
- The sound of that drill jangles horribly on the nerves. 那台钻机的声音响极了，十分刺耳。
- You'd better set a goal before you start the drill. 练习开始前，你最好设定一个目标。
- After a long drill he told the squad to fall out. 操练了好半天之后，他让这个班解散了。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- This drill can bore through rock. 这台钻机能钻透岩石。
- The dentist's drill made a lot of noise. 牙钻发出很大的噪音。
- A rotation of personnel; crop rotation. 员工的轮流替换; 农作物的轮作
- What's the drill for claiming expenses? 费用报销的手续，是怎样的?
- The rotation of crops keeps the soil healthy and fertile. 谷物轮种使土壤保持了肥力和高质。
- The class is chopped up into small groups for oral drill. 为进行口语训练，班级分成为几个小组。
- The sun appears to rise and set because of the earth's rotation. 因为地球在自转,看上去就有了日出和日落。
- The chairmanship of the committee changes in rotation. 委员会主席一职是轮流担任的。
- The depth of the river is maintained by dredging. 通过疏浚保持河道的深度。
- The pupils filed out of the room during the fire drill. 在消防演习中，学生们排成纵队走出房间。
- No dredging and spoil dumping shall be allowed. 工程不得包括挖泥及卸泥工序。
- It's an electric drill with a range of different attachments. 这是一个带有各种配件的电钻。
