rob the cradle
US /rɑb ðə ˈkreɪ.dəl/
UK /rɑb ðə ˈkreɪ.dəl/
1.
老牛吃嫩草, 与比自己年轻很多的人谈恋爱
to have a romantic relationship with someone who is much younger than oneself
:
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Some people might say he's robbing the cradle, but they seem very happy together.
有些人可能会说他老牛吃嫩草，但他们看起来很幸福。
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She's always been attracted to younger men, so she's known for robbing the cradle.
她一直被年轻男性吸引，所以她以老牛吃嫩草而闻名。