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热恋中的男子;风流的男人;好色之徒
You can describe a man as a Romeo if you want to indicate that he is very much in love with a woman, or that he frequently has sexual relationships with different women.
例句
Asked if any other children were planned, the 54-year-old Romeo said: 'Maybe, I dunno.'
当问到有没有计划再生孩子时，这位热恋中的54岁男子说：“也许吧，我不知道。”
...one of Hollywood's most notorious Romeos.
好莱坞最臭名昭著的花花公子之一