2 sentences for 耳塞 (ěr​sāi — earplug)

1. 我忘带耳塞了。

   wǒ wàng dài ěr​sāi le.

   I forgot my earplugs.

   Source: OpenSubtitles

2. 他在飞机上戴着耳塞睡觉以隔绝噪音。

   tā zài fēi​jī shàng dài zhe ěr​sāi shuì​jiào yǐ gé​jué zào​yīn.

   He wore earplugs to sleep on the plane to block out the noise.

   Source: Dong Chinese Dictionary