1. I can't sleep without wearing earplugs because I'm a light sleeper.
我是个轻度睡眠者，不戴耳塞我无法入睡。
2. It's important to wear earplugs when attending loud concerts to protect your hearing.
在参加嘈杂的音乐会时戴耳塞是保护听力的重要措施。