polyunsaturated oil

例句：

1. 1. The oil is rich inomega-3 fatty acids, whichare beneficial for heart health.
   这种油富含对心脏健康有益的欧米伽-3脂肪酸。
2. 2. Polyunsaturated fats areoften found in plant-based diets, as they provide essential nutrients.
   多不饱和脂肪通常存在于植物性饮食中，因为它们提供了必需的营养素。
3. 3. In recentyears, scientists have discovered that certain polyunsaturated fats can help reduce inflammationand improve brain function.
   近年来，科学家们发现某些多不饱和脂肪可以帮助减少炎症并改善大脑功能。