1. Luckily we took earplug with us, as the traffic outside our room was very noisy.
   真幸運，我們帶有耳塞，因為房間外面的車輛噪音太大。

ear.plug

n.（名詞）
An object made of a soft, pliable material, such as cotton or rubber, and fitted into the ear canal to block the entry of water or sound.
耳塞：一種由柔軟而靈便的材料制成的東西，如棉、橡膠等材料，以嵌入耳道擋住水或聲音的進入
An earphone, especially one that fits into the ear.
耳塞：耳機，尤指塞入耳中的那一種