名词
中文翻译：Unknown
同义词：
['alter ego', 'double', 'alter-ego']
例句：
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1.He's always playing the role of the perfect husband, but his alter ego is a womanizer.
他总扮演完美的丈夫角色，但他的替身是个花花公子。
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2. She was so nervous that she couldn't remember her own name, let alone her alter ego.
她太紧张了以至于忘了自己的名字，更不用说她的替身了。
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3. The actor's alter ego is a mysterious figure who appears in his movies as a sidekick.
这位演员的替身是一个神秘的人物，他在电影中以配角的身份出现。