lay down a keel

 
  • 安龙骨

lay down a keel的用法和样例:

例句

  1. The workers are laying down a keel.
    工人们正安龙骨。
  2. First they had to lay down a plan for the project.
    他们首先得为这项工程制订一个计划。
  3. Lay down a new ship, railway track.
    建造新船、新铁路。
  4. We shall have to lay down a new floor in the upstairs rooms.
    我们要在楼上的房间里铺一层新的地面。
  5. He had to lie down for a while to rest his legs.
    他得躺下一会儿让腿休息一下。

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