One of the men had a large red scar across his forehead.

VOA: special.2009.12.12

Eventually you develop a scab, as it healed, and then it would--and then the scab would fall off, and you'd be left with a scar.

愈合之后会变成一个疤,这个疤后来会脱落,你身上会留下疤痕

耶鲁公开课 - 生物医学工程探索课程节选

Hardened, scar tissue then forms over the nerve fibers.

VOA: special.2009.01.06

The word is from Latin and means scar.

VOA: special.2009.01.06

Above it looms a fresh white scar of newly exposed rock where the mountainside used to be.

VOA: standard.2010.04.02

He still carries a reminder of that day: a fat scar that runs from the middle of his neck to the top of his cheek, where the machete of a militiaman almost severed his head.

VOA: standard.2009.09.07