Scientists have called for setting up mask-only trash cans to deal with mask waste.
科学家呼吁建立只收集口罩的垃圾桶来处理口罩垃圾。
Setting a mask to "*.*.*.*.*" is equivalent to not specifying a mask.
若将一个屏蔽设为 "*.*.*.*.*"，则等于未指定屏蔽。
It is important to remember that in the community setting the following general measures may be more important than wearing a mask in preventing the spread of influenza.
应当注意，在社区环境中，就预防流感传播而言，下列一般性措施可能比戴口罩更重要。
It is important to remember that in the community setting the following general measures may be more important than wearing a mask in preventing the spread of influenza.
重要的是要牢记，在公共环境中，以下通用性措施往往会比使用口罩能有效地避免流感的传播。
By setting the notifications mask in this manner, the profiler can limit which notifications it receives.
通过用这种方式设置通知掩码，探查器可以限制它接收的通知。
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
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