brood over 沉思；忧虑
brood on 反复思考
brood about 为……烦恼
deep in thought 深思
lost in thought 陷入沉思
sit brooding 闷闷不乐地思考
1. He brooded over the mistake he made at work.
他为工作中的错误而反复懊悔。
2. She brooded all night about the conversation.
她整晚都在反复思考那次谈话。
3. The writer brooded for days before starting the novel.
那位作家在开始写小说前沉思了数天。
4. The bird brooded its eggs in the nest.
那只鸟在巢中孵蛋。
A: He brooded over the result of the exam all weekend.
A：他整个周末都在为考试结果闷闷不乐。
B: He should relax and think about it later.
B：他应该放松一下，之后再考虑。
1) 长时间沉思或忧虑某事
2) 反复思考负面或重要事件
3) （动物）孵卵的行为
1. 沉思；郁闷地思考；孵（蛋）（brood的过去式/过去分词）
e.g. He brooded over his failure. 他对自己的失败陷入沉思。
verb
1. to think deeply and often unhappily about something for a long time, or to sit on eggs to hatch them.
Synonym: ponder, dwell, contemplate