He knew a waterproof earplug would also help prevent the painful outer ear infections known as "swimmer's ear".
他还知道一款防水的耳塞还能预防外耳疼痛而感染中耳炎。
For those special position workers, we provide them with some personal protection devices like ear cover and earplug .
对部分岗位操作工人采用个人防护措施，佩带耳罩、耳塞。
Apparel usual necessary personal protective equipment: work clothes, protective shoes, crash helmet, protective glasses, and earplug.
穿戴日常必需的劳保用品：工作服、安全鞋、安全头盔、防护眼镜和耳塞。
Apparel usual necessary personal protective equipment: work clothes, protective shoes, crash helmet, protective glasses, and earplug.
穿戴日常必需的劳保用品：工作服、安全鞋、安全头盔、防护眼镜和耳塞。
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