Physicists are looking at the complex fusion of chain reactions.
Increasing interest rates can lead to chain reactions in the financial markets.
Toaday we learned about chain reactions in physics class, but none of us quite understood it.
Finally, after millions of years, and well after the nuclear chain reactions terminated, xenon 129 formed.
最后, 经过了几百万年, 连锁核反应结束许久之后, 氙129才产生.