ADJ-GRADED
（尤指對令人不快的事物）沉思的，苦苦思索的
If someone's expression or appearance is brooding, they look as if they are thinking deeply and seriously about something, especially something that is making them unhappy.
例句
She kissed him and gazed into his dark, brooding eyes.
她吻了吻他，久久凝視著他烏黑憂郁的雙眼。