英语词汇“knock one's head against a stone wall”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	knock one's head against a stone wall
释义	knock one's head against a stone wall 碰壁，撞上不愉快的事；试图干不可能的事，白费气力
随便看	pulse shaping by superposing sinusoidal waves pulse-shaping circuit pulse shaping circuit pulse shaping circuits pulse shaping curcuit pulse-shaping line pulse shaping methods pulse-shaping output circuit pulse shaping output circuit pulse-shaping stage pulse-shaping systems pulse sharpening pulse shifter pulse shortening pulse short wave diathermy pulse short wave diathermy unit pulse short wave therapy pulse shrinkage pulse signal pulse-signal pulse signal generator pulse signal source pulse sintering pulse site pulse size

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