binocular colour mixing

例句：

1. 1.The binoculars were used to observe the stars in the night sky.
   双筒望远镜被用来观察夜空中的星星。
2. 2.During the expedition, we used binoculars to spot wildlife.
   在这次探险中，我们使用双筒望远镜来发现野生动物。
3. 3.The binoculars helped us to identify different species of birds.
   双筒望远镜帮助我们识别了不同种类的鸟类。