remorseless

The dictator was remorseless in his pursuit of power, crushing anyone who stood in his way.

(Chinese) 独裁者在追求权力的过程中冷酷无情，粉碎任何阻碍他的人。

The remorseless advance of the desert sands has buried several ancient villages in the region.

(Chinese) 沙漠风沙不停歇的推进已经掩埋了该地区的几个古村落。