emitter leg

例句：

1. 1. The scientist used an electron microscope to observe the emission of light from the atoms in the sample.
   这位科学家使用电子显微镜观察了样本中原子发光的现象。
2. 2.The team's performance was a testament to their ability to emit energy efficiently.
   团队的表现证明了他们高效地释放能量的能力。
3. 3. The new device is designed to emit ultraviolet radiation for sterilization purposes.
   这款新设备被设计用来产生紫外线以进行消毒。