| 字词 | 徒劳无功 |
| 释义 | tu2 lao2 wu2 gong1 A futile attempt. Make a futile effort. Work to no avail. Attempting to solve a problem with the wrong tools. Ploughing the sands and sowing the waves. Alternative form: 徒劳无益 (tu2 lao2 wu2 yi4). |
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