| Front | 殚精竭虑 |
|---|---|
| Back | [ dān jīng jié lǜ ] 使尽了精力,费尽了心思。 例句:王教授为了钻研这个课题,~,废寝忘食。 挖空心思 煞费苦心 费尽心机 处心积虑 呕心沥血 殚思极虑 千方百计 掉以轻心 敷衍塞责 |
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