(1)反映(射);表明(act of reflecting or state of being reflected)[U]：the～of light (sunlight) by a mirror/from the water 镜子/水面反射的光(太阳光);the～of heat 热的反射;

(2)倒影，映像(image reproduced as in a mirror)[C]：see (look at) one's～in the mirror/the lake 看见(看着)镜子里/湖里自己的影像(倒影);the～of the trees in the still water 树在平静水面上的倒影;be a pale～of one's former self (fig)与自己以前相比，面容憔悴;〖同〗 image;

(3)反映(sth reflecting the nature of sb or sth)[C][N(of)](fig)：a～of reality/of life in nineteenth century Britain/of sb's happiness 现实/英国19世纪的生活/某人的幸福的反映;Their behaviour in this respect was a～of their very different personality. 他们在这方面的行为反映了他们完全不同的个性。

(4)思考，沉思(careful or deep consideration or thought)[U]：speak/act without～不经思考的讲话/行动;After long/a moment's～，he decided not to drop out of school. 长时间考虑/考虑了一会儿后，他决定不辍学。〖同〗thought，consideration;

(5)想(看)法(idea，remark，or piece of writing resulted from this)[C，常pl][N(on)]：～s on what sb said/the world war/the current situation 对某人的话/世界大战/当前形势的看法;idle～s on the past 回忆往事的遐想;The book included～s by various people involved in the incident. 这本书包括了这个事件中各有关人士的观点。〖同〗opinion，view;

be/cast a reflection on 对……有不良影响，说明……不好：Obviously this issue is a very sad～on the state of the Labour Party. 很明显，这个问题对工党会产生十分糟糕的影响。This is a～upon your honour. 这有损于你的荣誉。

on reflection 经过考虑：I suppose，on～，there is something immoral about it. 经过考虑，我认为此事有点不道德。