/riˈækʃn ||; rɪˈækʃən/noun
1 [C,U] (a) reaction (to sb/sth) something that you do or say because of sth that has happened 反应;回应:
Could we have your reaction to the latest news, Prime Minister? 首相先生,能不能告诉我们你对这个最新消息有什么反应?
I shook him to try and wake him up but there was no reaction. 我摇摇他想把他弄醒,但他没有反应。
2 [C,U] (a) reaction (against sb/sth) behaviour that shows that you do not like the influence of sb/sth (for example authority, your family, etc) (对当权者、家庭等的)反抗,反对
3 [C] a reaction (to sth) a bad effect that your body experiences because of sth that you have eaten, touched or breathed (吃、触摸、吸入某物后产生的)不良反应,不舒服:
She had an allergic reaction to something in the food. 她对食物里的某种东西有过敏反应。
4 [C] [usu.pl] the physical ability to act quickly when sth happens 本能的反应:
If the other driver's reactions hadn't been so good, there would have been an accident. 如果另外那个司机的反应不这么快,早就发生事故了。
5 [C,U] (technical术语) a chemical change produced by two or more substances coming into contact with each other (两种或以上物质接触后所产生的)化学反应,化学作用