to protect something very carefully because it is important to you

For a man who jealously guards his privacy, he seemed very relaxed during the meet-and-greet.

The exact location of the hotel where the royal couple is staying is a jealously guarded secret.

The organization has always guarded its political independence jealously.

These countries have jealously protected their agricultural sectors from foreign competition.

The French have always jealously protected the status of champagne.

in a way that shows you are jealous (= unhappy and angry) because of something someone has got

She eyed Gwen's engagement ring jealously. 她嫉妒地看着格温的订婚戒指。

in a way that shows you are jealous (= unhappy and angry) because you do not want to share someone's love and attention

He was accused of jealously beating up his wife's co-worker. 他被指控因妒忌而殴打了妻子的同事。