给变暖教忠实粉丝普金上一课

[赖美豪中]

Indoor radon levels are normally at the highest in the winter or colder months because of the thermal stack effect, a snowy barrier, and tightly sealed homes.
Cold temperatures increase the pressure within the home, meaning more air is being pulled in from the ground, which elevates the risk of radon entering the home.

https://www.protectenvironmental.com/wh ... the%20home.