vasodilatation

例句：

1. 1.During the cold winter months, the body's blood vessels constrict to conserve heat.
   在寒冷的冬季，身体会收缩血管以保存热量。
2. 2.The doctor prescribed a medication that would help with vasodilation.
   医生开了一种药物来帮助血管扩张。
3. 3. Vasodilation is a natural response to stress, allowing blood to flow more freely through the body.
   血管扩张是一种对压力的自然反应，使血液能更自由地流经身体。