Wèishēngjiān zhuāng ge páiqìshàn, cháoqì jiù búhuì mēn zài lǐmiàn.
Install an exhaust fan in the bathroom so moisture won't get trapped inside.
Tips
usage
排气扇 is a basic ventilation fan (typically wall- or window-mounted) for moving air out of a room. It's simpler than 抽油烟机 (range hood, which has filters and a hood) and is most commonly installed in bathrooms and small kitchens.