英语释义
1. a series of events so related to each other that each one initiates the next
2. a number of events triggered by the same initial event
3. a self-sustaining chemical or nuclear reaction yielding energy or products that cause further reactions of the same kind
4. a series of events in which each event causes the next one a series of events caused by one single event
5. a chemical or nuclear change that causes other changes of the same kind to happen
6. a series of events in which each event causes the next one