Reflection: f: ny ɡ n \ x0d \ ① Reflection is a metaphor used to express the essence of objective things: ~ real life \x0d\② Telling the situation and opinions to superiors or relevant departments: his ~ opinions \x0d\③ refers to the activity process in which an organism accepts and answers the influence of objective things. \x0d\\x0d\ reaction: f \ ny \ n \ x0d \ ① corresponding activities caused by stimulation of the body in vivo or in vitro. \x0d\② Chemical reaction. \x0d\③ Vomiting, fever, headache, abdominal pain and other symptoms caused by injection or medication. \x0d\④ The nucleus is changed by external force: thermonuclear ~. \x0d\⑤ Views, attitudes or actions caused by the incident: His speech caused different ~. Usage: The common usage of "reaction" is: the activity caused by physical stimulation. For example, before the (1) earthquake, some animals had abnormal reactions. Before the goalkeeper could react, the ball had flown into the net. Especially the symptoms caused by injection and medicine. For example, (3) he didn't cause any reaction after being injected with the flu vaccine. (4) Although this medicine is very effective, some people will have mild diarrhea and other reactions. An opinion, attitude or behavior caused by something. His speech aroused strong repercussions at the meeting. (6) The people responded well to this new regulation. The process of physical and chemical changes. For example: (7) When thermonuclear reaction occurs, it will release huge energy. (8) When these two substances are put together, a chemical reaction will occur. The common usage of "reflection" is: metaphor shows the face or essence of objective things. For example: (9) This novel reflects the new changes in rural areas of China. (10) This incident reflected a new trend of thought in society at that time. State the situation, opinions, etc. Reflect to the superior or relevant departments. For example: (1 1) We have reflected the demolition of old blocks to our superiors. (12) The opinions reflected by these comrades are reasonable and should be taken seriously. As can be seen from the above examples, "reaction" is mostly passive, while "reflection" is mostly active; "Reaction" generally cannot take an object, such as "reaction" in (2) as a predicate verb without an object. "Reflect" can take an object, for example, "reflect" in (9) to (10) takes an object.