lumenmeter

例句：

1. 1. The scientist used a lumenmeter to measure the intensity of the light.
   科学家使用一个光度计来测量光线的强度。
2. 2. The engineer designed a lumenmeter for measuring the brightness of the sun.
   工程师设计了一个光度计来测量太阳的亮度。
3. 3. The doctor used a lumenmeter to check the patient's blood pressure.
   医生使用一个光度计来检查患者的血压。