| 词汇 | 前功尽弃 |
| 释义 | 前功尽弃 qiánɡōnɡ-jìnqì idiom all the previous efforts are wasted ▸ 大坝一定要在雨季到来前合拢,否则就会前功尽弃。 The dam must be closed before the rainy season sets in or all our labour will be lost. |
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