spontaneous reaction

基本解释

The Spontaneous Reaction of the Market against the Effects of Credit Expansions
抑制信用擴張傚應的市場自發反應。
Even if you don’t have severe allergies, you can still be prepared for a spontaneous reaction.
即使你沒有出現過嚴重的過敏症狀，你仍應該做好準備好。
Our spontaneous reaction is to say: "Had I been there, I would have helped; what is wrong with these people?"
我們自發反應地想說: “如果我在那裡的話,我就會去救助, 而這些不去救助人究竟犯有那些錯誤?”

So, then we go to thermodynamics and chemical equilibrium, and this is really about chemical reactions -- weather a reaction will go, will it be spontaneous, if there an equilibrium, what direction will the reaction be shifted in.
然後我們要講到熱力學和化學平衡,這都和化學反應有關，一個反應是否能發生,是不是能自發反應，如果存在化學平衡，它會朝什麽方曏移動。
麻省理工公開課 - 化學原理課程節選

What you have seen countrywide has been spontaneous reaction of the people to the rigging of elections, and this is what will need to be addressed.
NPR: Kenyan Opposition Leader Calls for New Election
Even though almost all the images of that tiger were computer generated, the creature is fearsome enough to provoke a spontaneous physical reaction.
FORBES: 3 Tips on How to Negotiate with the Tiger