If you say that someone overreacts to something, you mean that they have and show more of an emotion than is necessary or appropriate.
例句
Is the council right to be concerned, or is it overreacting?...市政委員會表示關(guān)切是合情合理呢，還是反應(yīng)過激？The market appeared to overreact, but this is not the case...市場反應(yīng)看似過激，但實際并非如此。
英漢詞典釋義
vi.
反應(yīng)過火
Some people overreacted to what was only a throwaway remark.有些人對隨便說出的一句話反應(yīng)過敏了。