轻信者易受骗.Who is ready to believe be easy to deceive.这则广告专门针对担心自己肥胖而易受骗的年轻女士.The advertisement is aimed at gullible young women worried about their weight.我哥哥极易受骗.My brother is an easy prey for scams....

“易受骗”的英语可以翻译为：[法] vulnerable to fraud，gullibility ...