draw a blank
释义
一无所获：指在寻找答案或解决问题时一无所得。
例句
1·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。
2·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。
3·You probably draw a blank .
你的想象可能一片空白。
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