To allow all extensions for a filetype, leave both of the arrays empty for that filetype.如果想允许一种文件类型的所有扩展名,只需将针对该文件类型的所有访问控制数组设为空即可.There are telephone extensions in every office.每间办公室都有电话分机.Extensions of n - echelon cat...

There are telephone extensions in every room.每个房间都有电话分机.Some of the best extensions are made from sections of rod tube or drainpipe.最好的延长管中有些是用杆管或排水管制成的。There are telephone extensions in every office.每间办公室都有电话分机....

n.延长( extension的名词复数 )，延伸，[逻辑学] 外延，扩展名...

extensions的音标：extensions的英式发音音标为：[ɪks'tenʃnz]extensions的美式发音音标为：[ɪks'tenʃnz]...