focusing glass

例句：

1. 1. The new camera has afocusing glass that can adjust the focus quickly.
   这款新相机有一个可快速调整焦点的聚焦玻璃。
2. 2. The scientist used a focusingglass to observe the tiny particles in thesample.
   科学家使用了一个聚焦玻璃来观察样本中的微小颗粒。
3. 3. The photographer focused hisfocusing glass on the distant mountain range.
   摄影师将他的聚焦玻璃对准远处的山脉。