anchor jack

例句：

1. 1. The ship was anchored in the harbor for repairs.
   船在港内停泊待修。
2. 2.The anchor jack was used to secure the boat to the dock.
   锚定器被用来将船固定在码头上。
3. 3.The captain had to use the anchor jack to pull the vessel out of the water.
   船长不得不使用锚定器把船只从水中拉出来。