But notice that Ale doesn't know the color of the hat on his own head.

注意一下,艾尔不知道他头上的帽子是什么颜色

耶鲁公开课 - 博弈论课程节选

The plans, announced by Sir Michael in January, caused anger among head teachers, who currently receive 48 hours' notice.

BBC: Heads attack chief inspector's 'bully boy tactics'

The head of a powerful labor union even put Democrats on notice that it would be, in future elections, open season on anyone who supported a health care reform plan that doesn't include a public option.

CNN: Commentary: Obama team flip-flops are showing

Actually, the card is on Robbins' head, but they're so focused on the task that they don't immediately notice.

CNN: New TV show plays tricks on your brain