anchor hydrographical station

例句：

1. 1.The ship anchored in the harbor.
   那艘船停泊在港口。
2. 2. The boat was securely anchored to the dock.
   小船被安全地锚在码头上。
3. 3.The pilot dropped the anchor and let the boat drift.
   领航员抛下锚，让船随波逐流。