spontaneous avalanche-like fission reaction

例句：

1. 1. The spontaneous avalanche triggered by the earthquake was a reminder of nature's power.
   地震引发的雪崩提醒了我们大自然的力量。
2. 2. In the laboratory, scientists study the spontaneous fission reaction to better understand nuclear reactions.
   在实验室里，科学家们研究自发裂变反应，以便更好地理解核反应。
3. 3. The spontaneous avalanche-like fission reaction in the ice is a complex phenomenon that requires careful observation and analysis.
   冰中的自发雪崩式分裂反应是一个复杂的现象，需要仔细观察和分析。