辐射

例句：

1. 1. The scientist used a device to measure the radiation from the sun.
   科学家使用一种装置来测量太阳的辐射。
2. 2. Radiation therapy is often used to treat cancer.
   辐射治疗通常用于治疗癌症。
3. 3. The car's engine radiates heat from its exhaust.
   汽车发动机通过排气管辐射出热量。