draw a blankinformalFAIL to be unsuccessful in finding information or the answer to a problem 〔在查找信息或问题的答案时〕不成功，无结果 All his investigations have drawn a blank so far. 他所有的调查迄今为止都没有结果。
draw a blank• Well, we've drawn a blank.• Once again police investigators have drawn a blank.• He used the word discreet and drew a blank.• No, I draw a blank.• Outside, it is closing time and we have drawn a blank.• Police inquiries so far have drawn a blank.• But other experiments continue to draw blanks, as two recent papers in Physical Review Letters report.• Maggie had drawn a blank, none of the bodies were of those she was looking for.• I just drew a blank on the last test question.• Ron Wyden, drew a blank when asked where Bosnia was.
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