adj.变色的,有褐斑的,变酸的
I must admit I'm completely foxed.
我得承认我一点都不懂。
I admit I was foxed for some time.
我承认我一度被难住了。
Only once did we hit on a question which foxed one of the experts.
我们只碰到过一个把一位专家也难住了的问题。