infra

例句：

1. 1. The infrared camera can detect objects that are too far away to be seen with the naked eye.
   红外相机可以探测到肉眼无法看到的物体。
2. 2. Infrastructure development is crucial for economic growth and social stability.
   基础设施的发展对于经济增长和社会稳定至关重要。
3. 3. The government has invested heavily in improving the infrastructural facilities in thecountry.
   政府已经大力投资于改善该国的基础设施设施。