1. The sun is constantly emitting light and heat.
太阳不断地发射光和热。

2. The factory is emitting harmful pollutants into the air.
工厂正在向空气中排放有害的污染物。

3. The radio tower is emitting a strong signal that can be heard for miles.
无线电塔正在发射强烈的信号，可以传达几英里之外。

4. The volcano is emitting smoke and ash, causing concern for nearby residents.
火山正在喷发烟雾和灰尘，让附近居民感到担忧。

5. The car's exhaust pipe is emitting thick black smoke, indicating a problem with the engine.
汽车的排气管正在排放浓烟，表明发动机有问题。

6. The fire was emitting a fierce heat that could be felt from a distance.
火焰发出的热量让人感觉到了远处。