笨重地

例句：

1. 1. He moved the heavy box with difficulty.
   他费力地移动了那个沉重的箱子。
2. 2. The old man walked slowly and heavily, as if he was carrying a heavy burden.
   老人缓慢而沉重地走着，好像他背负着沉重的负担。
3. 3. The car was so heavy that it could hardly move.
   这辆车太重了，几乎动不了。