single-gun tricolour tube

例句：

1. 1. This single-gun tricolourtube is perfect for bird watching.
   这个单管三色望远镜非常适合观鸟。
2. 2. The astronomer used a single-gun tricolour tube to observe the stars.
   天文学家使用单管三色望远镜来观察星星。
3. 3.The children were thrilled to see the colorfullights from the single-gun tricolourtube.
   孩子们看到单管三色望远镜发出的彩色灯光时非常兴奋。