scar

深的伤口常常会永久留下疤痕。

Deep cuts often ___scar permanently.

那次烧伤会留下一道难看的疤痕。

That burn will leave a nasty ___scar.

事故在她手臂上留下了一个难看的疤痕。

The accident left an ugly ___scar on her arm.