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[Subject: Medical Sciences, Medicine]
- 利用紗布等材料製成的衛生用品。中間夾帶有孔的膠片及藥棉或活性炭,兩旁繫有帶子,可罩在口鼻上,以防止灰塵和病菌的侵入。
Translated by: TZUNG-HSIEN CHEN
Translated in 11 languages