英语词汇防尘口罩是什么意思，防尘口罩的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	防尘口罩
释义	DEFINITIVE EXAMPLES 权威例句〔grade〕Dust masks are graded according to the protection they offer.防尘口罩根据它们的防护效果分等级。柯林斯高阶
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