| 字词 | 苦心孤诣 |
| 释义 | 苦心孤诣 熟 make extraordinarily painstaking efforts; toil or endeavour single-heartedly 为了改造环境，他苦心孤诣地制订了周密的计划。In order to transform the environment, he drew up a project with painstaking accuracy. 苦心 |
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