The permissions mask allocates 8 bits each to the four possible types of key accessor: possessor, user, group, and other.

权限掩码给四个可能的密钥访问者类型各分配 8 位：所有者、用户、组和其他。

youdao

Create new group for the photo. See picture below for reference on its position. Draw rectangular selection in front of the camera. Click Add Layer Mask icon.

创建新组照片。见自己的立场参考下面的图片。绘制在镜头前矩形选区。点击添加图层蒙板图标。

youdao

Zeng's group of three canvases demonstrates how any marking, any technique, any medium, must mask the image it reveals.

曾梵志把三张画布拼成一组，展示了任何印记、技法、中介是如何必须像面具那样把它们所创造的意象予以遮蔽。

youdao

But study author Kristine Funk, the Kaiser Permanente Center for Health Research says those averages mask significant differences within the group of website users.

VOA: standard.2010.07.30

"The town of Steubenville has been good at keeping this quiet and their star football team protected, " an Anonymous member wearing the group's trademark Guy Fawkes mask says in a video posted to the group's LocalLeaks website.

CNN: Defense battles social media blizzard in Ohio rape case

Numerous protesters - here and elsewhere - are choosing to identify themselves with the online protest group "Anonymous" by wearing the Guy Fawkes mask.

BBC: V is for what? The meaning of the mask

Fatah leader Mahmoud Abbas's decision to remove both his own mask and that of his organization should cause the Netanyahu government to reassess its current policies toward the group.

CENTERFORSECURITYPOLICY: Fatah's message