earplug [ˈɪrplʌg]

例句:

• The workers have to wear earplug to put up with the deafening moise in the factor.
  工人们必须带耳塞才能够忍耐工厂里震耳欲聋的噪音.
  
• Luckily we take earplug with us, as the traffic outside our room is very noisy.
  真幸运，我们带有耳塞，因为房间外面的车辆噪音太大。