他嫉妒地瞥了一眼哥哥的新手机。

He glanced at his brother's new phone ___jealously.

那位女演员嫉妒地观察对手的表演。

The actress observed her rival's performance ___jealously.

他们嫉妒地守护着自己的秘密，不让外人知道。

They guarded their secrets ___jealously from outsiders.