词典释义：
双语例句
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She also said it was important they were correctly fitted - some of the more expensive respirator masks are molded to fit the face unlike standard masks that can be bought on the high street.
她也说佩戴尺寸合适的口罩很重要——一些比较贵的过滤式口罩是按照人的脸型制作的，不像在大街上就能买到的那些标准口罩。