1. 作困惑状. (前途等)空虚, 暗淡：look black at 怒视. | look blank 作困惑状. (前途等)空虚, 暗淡. | look blue 神色沮丧. 脸色发青.
2. 发愣：53. Go blank变成一片空白 | Look blank发愣 | 54. Blast off发射
1. Advertisers often look at me with a blank expression when I try to explain this.
2. The report found the websites center more on look other than content with some web columns even appearing blank.