chill rod

例句：

1. 1. The chill rod in the freezer keeps the food cold.
   冰箱里的冷却棒保持食物冷冻。
2. 2. The engineer used a chill rod to cool down the engine.
   工程师使用冷却棒来冷却发动机。
3. 3.The chill rod was used to prevent the water from freezing.
   冷却棒被用来防止水结冰。