nuclear cataract

例句：

1. 1.The nuclear power plant is located in the northwest of the country.
   核电站位于该国西北部。
2. 2. The scientists are studying the properties of the nucleus.
   科学家们正在研究原子核的性质。
3. 3. The atomic nucleus is made up of protons and neutrons.
   原子核由质子和中子组成。