面对失败,他加倍努力训练以提高成绩。

Facing failure, he redoubled his training efforts to improve performance.

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Facing failure, he redoubled his training efforts to improve performance.

redoubled 是动词 redouble 的过去式形式。redouble 由前缀 re-(表示"再次")和动词 double("加倍")组成,字面意思是"再次加倍",引申为"加倍努力"或"加强"的意思。在句中表示他面对失败后,把训练强度增加了一倍。

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