石油冻

例句：

1. 1. The oil freezes in winter, making it difficult to transport.
   冬天油冻结，使得运输变得困难。
2. 2. The oil freezes at a certain temperature, which is crucial for refining.
   油在一定温度下会冻结，这是精炼的关键。
3. 3. Oil freezes when it comes into contact with water, which can cause damage to equipment.
   油与水接触时会冻结，这可能会损坏设备。