submarine land-slide

例句：

1. 1. The submarine was able to dive deep into the ocean.
   这艘潜艇能够潜入深海。
2. 2. The submarine was used for military purposes during World War II.
   这艘潜艇在二战期间被用于军事目的。
3. 3. The submarine is a fascinating machine that can travel through water without being seen.
   这艘潜艇是一种令人着迷的机器，它可以在水中自由航行而不被人看见。