millpond

noun

1. （尤指旧时用于推动磨坊水车的）磨坊水池
   a small area of water used especially in the past to make the wheel of a mill turn
   1. The sea was as calm as a millpond.
      海上风平浪静。

1. Ducks are web-footed to help them move through the water. Drove she ducklings to the millpond, every morning just at nine. Stubbed her toe upon a splinter, fell into the foaming brine.
   鸭子脚上有蹼，便于游泳。她把鸭子赶入池中，每天早上在九点钟。她的小脚碰到木片，倾身落入水里。
2. Development of scale-removing used in the millpond of motor vehicle
   机动车辆水箱清洗除垢剂的研制

noun

1. a pond formed by damming a stream to provide a head of water to turn a mill wheel