[Story] Once upon a time, a paper boat sailed on a river. It passed by a tree with a perched bird, a group of people wearing superman t-shirts, and a building with an upper floor.

[参考翻译] 从前，有一艘纸船在河上航行。它经过一棵停着一只鸟的树，一群穿着超人T恤的人，还有一座带有上层楼的建筑。

[Words]

  1. paper [ˈpeɪpər] n 纸, 文件
  2. per [pər] n 杆, 杆子
  3. super [ˈsuːpər] adj 超级的, 极好的
  4. upper [ˈʌpər] adj 上面的, 上部的