"迈着沉重的步伐" 可以用英文表示为 "treading heavily" 或 "treading with heavy steps"。
这个表达来源于 "tread" 这个动词，它的意思是踩，践踏。加上形容词 "heavy"，意思就是迈着重的步伐。
例句：
The soldier marched into the room, treading heavily as if he carried the weight of the world on his shoulders. (一名士兵走进房间，迈着沉重的步伐，好像肩上扛着全世界的重担。)
She treaded heavily up the stairs, her heart heavy with sorrow. (她迈着沉重的步伐走上楼梯，心中满是悲伤。)
希望这些信息对你有帮助。