美 [drɔː ə blæŋk]
一无所获：指在寻找答案或解决问题时一无所得。
钻了一口干井
... *Drag your heels 不情愿地做 Draw a blank 抽空签, 一无所获 *Draw a line in the sand 划清界限，不支持某种行动或策略 ...
... Down to the wire 不到最后关头难分胜负；拮据的 Draw a blank 忘记；脑中一片空白 Eagle eye / Eagle-eyed 眼神锐利的；有眼光的 ...
... Down Under澳新地区 Draw a Blank一无所获 Drop Somebody a Line给某人短信 ...
... 拉；吸；拔出；有吸引力的事物；可吊起部分；提取；引出 draw 钻了一口干井 draw a blank 从弃井中起出套管和钻具 draw a well ...
Mary had feared the day she would draw a blank during a presentation.
玛丽担心自己在演讲时头脑短路了。
Efforts to explain this sudden reduction in child deaths appeared to draw a blank.
所有寻找造成儿童死亡率突然降低的努力都一无所获。
You probably draw a blank.
你的想象可能一片空白。
Perhaps you draw a blank every time you introduce a new colleague to co-workers.
If you draw a blank ask successful people in your field what they did to get there.
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Or that reference sites like Answers.com and Wikipedia, with thousands of preprogrammed responses, also draw a blank?