防护口罩 Masks ; protective facial mask ; Particulate Respirator ; protective mask

重新输入保护口令 reenter protection password

写维护口 Write-protect notch

医用防护口罩 respirator ; medical protective mask

写庇护口 Write-protect notch

戴上呼吸防护口罩 respirator mask

写保护口 Write-Protect Notch ; protect notch

书写保护口 write protect notch