汉英对照:
Chinese-English Translation:
棉口罩主要用于制造业，材质柔软舒适，但防护作用不大。普通棉布口罩由于材质本身不够致密，无法起到预防感染目的。
Cotton mask is mainly used in manufacturing industry. It is soft and comfortable in material, but has little protective effect. Because the material of ordinary cotton mask is not compact enough, it can not prevent infection.
棉口罩主要用于制造业，材质柔软舒适，但防护作用不大。普通棉布口罩由于材质本身不够致密，无法起到预防感染目的。
Cotton mask is mainly used in manufacturing industry. It is soft and comfortable in material, but has little protective effect. Because the material of ordinary cotton mask is not compact enough, it can not prevent infection.
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