vt. & vi.思考；沉思 spend time in considering (a fact, difficulty, etc.)

　～ the advisability of such a course of action　估量采取这样行动的可行性
　～ the events of history　回顾种种历史事件
　～ long　长时间思考
　～ well　考虑好
　～ bitterly　苦苦地思考
　～ closely　接近地思考
　～ darkly　邪恶地思考
　～ meditatively　沉思地思考
　～ monotonously　单调地思考
　～ moodily　不高兴地思考
　～ morbidly　不健康地思考
　～ patiently　耐心地思考
　～ perplexedly　困惑地思考
　～ philosophically　镇静地思考
　～ sagely　明智地思考
　～ seriously　认真地思考
　～ silently　静静地思考
　～ on　深思（某事）
　～ on the reasons of　考虑…的原因
　～ over a problem　考虑一个问题

　He pondered for a few minutes and then left.　他沉思片刻后走了。
　She pondered for some minutes before giving an answer.　她思考了几分钟才作答复。
　She cast her eyes over the paper, pondered, caught the meaning.　她把眼光盯在那文件上，思考着，领会着其中的含义。
　When I asked her advice, she pondered and then told me not to go.　当我征求她的意见时，她沉思了一会儿，然后叫我不要去。
　We pondered many things.　我们考虑许多事情。
　He pondered his words thoroughly.　他仔细掂量了自己的话。
　He sat pondering the advice he received.　他一边坐着一边仔细考虑他得到的劝告。
　The cabinet would do well to ponder the advisability of such a course of action.　内阁最好还是考虑一下这一行动步骤的可行性。
　We pondered where to meet him.　我们考虑在哪儿与他见面。
　The prisoner pondered how to escape.　囚犯盘算如何越狱逃跑。
　We pondered whether to tell him.　我们考虑是否要告诉他。
　We should ponder what to do next.　我们应考虑下一步该怎么办。
　You needn't ponder how to behave at the party.　你没必要考虑自己在舞会上如何表现。
　They're pondering moving their offices outside London.　他们在考虑把办事处搬出伦敦。
　We pondered what he had done.　我们衡量他所做的事。

 ♣ ponder over〔on, upon〕　(v.+prep.)
　深思（某事）　consider (a matter) deeply
　We pondered over the present state of affairs.　我们考虑了当前的情况。
　Give me a few days to ponder over it.　给我几天时间好好考虑这个问题。
　The young captain is pondering over a thorny problem.　年轻的上尉正在思考一个棘手的问题。
　Successive committees have pondered over this problem without finding a solution.　连续几届委员会都考虑过这个问题而未找到解决的办法。
　She pondered bitterly upon the meaning of life.　她苦苦地思索生活的意义。