名词
中文翻译：Unknown
同义词：
['bravery', 'courage', 'valor']
例句：
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1. He always acts with derring-do when he is in charge of a project.
他在负责项目时总是表现得非常勇敢。
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2. The brave soldiers fought valiantly against the enemy.
勇敢的士兵们英勇地抵抗敌人。
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3. His derring-do earned him many friends and admirers.
他的英勇行为赢得了很多朋友和仰慕者。