3N-SING [NOUNof n](不好的情感、性质等的)弥漫,充斥 You can refer to something such as an unpleasant emotion or an undesirable quality that seems to affect every aspect of a particular situation as a blanket of that emotion or quality. (不好的情感、性质等的)弥漫,充斥 [literary]
It seems as if the blanket of depression is in some way necessary to help them blot out the even greater pain of real life.
5ADJ-GRADED [usually ADJ n]通用的;全面的;无一例外的 You use blanket to describe something when you want to emphasize that it affects or refers to every person or thing in a group, without any exceptions. 通用的;全面的;无一例外的 [emphasis]
There's already a blanket ban on foreign unskilled labour in Japan.
日本已经全面禁止国外非熟练工入境。
...the blanket coverage of the Barcelona Olympics.