My visit to India left an indelible impression on me.我的印度之行给我留下了难以磨灭的印象。

The war has made an indelible mark on the world.战争给世界留下了难以抹去的印记。

The label pinned to Helen's coat was in indelible ink.别在海伦大衣上的标签是用不褪色墨水写成的。

It leaves indelible stains on clothes.它会在衣服上留下洗不掉的污渍。