freezing point depressant

例句：

1. 1. The new antifreeze is a revolutionary improvement over the old one.
   这款新型防冻液比旧款有革命性的改进。
2. 2.The freezing point depressant in this product helps extend the lifespan of the engine.
   该产品中的冰点降低剂有助于延长发动机的使用寿命。
3. 3. In cold weather, adding a small amount of this depressant can significantly reduce the risk of frost damage.
   在寒冷天气中，添加少量这种降低剂可以显著减少结霜的风险。