讲解文本：

jealous 嫉妒的，羡慕的
He was jealous when he found that Mary loved someone else.
当他发现Mary爱上别人的时候， 他吃醋了。

be jealous of 吃某人的醋，嫉妒某人
He is always jealous of people who earn more than he does.
一见朋友收入比他多，他就红眼。

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