留下伤疤 meaning in Chinese

one which was certain leave scar

Though the sore be healed , yet a scar may remain
伤口虽然痊愈,却可能留下伤疤。 (谚)
Fine . let it scar . who knows
好，留下伤疤谁知道呢
When you say things in anger , they leave a scar just like this one
每次你发脾气的时候，它们都会就像这个一样留下伤疤。
The fence will never be the same , when you say things in anger , they leave a scar just like the ones on the fence
这个栅栏再也不可能恢复到当初了，你生气时候说出的话，也会在别人心里留下伤疤，正如钉子留在这个栅栏上的伤疤一样。