neu

例句：

1. 1. The neutron is a subatomic particle that has no electric charge.
   中子是一种不带电的亚原子粒子。
2. 2. Neutrons are used in nuclear reactors to produce energy.
   中子在核反应堆中用于产生能量。
3. 3. The neutron emitted by the radioactive nucleus can be used to detect defects in the material.
   放射性核素发射出的中子可以用来检测材料中的缺陷。