1. Don't forget to turn on the defogger in your car when driving in foggy weather.
在雾天驾驶时，别忘了打开汽车的除雾器。

2. The defogger on the bathroom mirror clears away the steam after a hot shower.
洗完热水澡后，浴室镜子上的除雾器可以清除蒸汽。