top tumbler frame

例句：

1. 1. The top tumbler frame is designed to protect the camera lens from dust and debris.
   顶部翻页器框架设计用来保护镜头免受灰尘和碎片的损害。
2. 2. The top tumbler frame is a crucial component of the camera's construction.
   顶部翻页器框架是相机构造中的关键部件。
3. 3. The top tumbler frame allows for easy access to the camera's controls.
   顶部翻页器框架便于轻松访问相机的控制按钮。