v 1 [I] (of a bird) sit on eggs to hatch them (指鸟)孵雏. 2 [I, Ipr] ~ (on/over sth) think (about sth) for a long time in a troubled or resentful way 忧闷地沉思(某事物): When he's depressed he sits brooding for hours. 他消沉的时候, 就坐著沉思几小时. *| It doesn't...