来自《耶鲁大学开放课程：生物医学工程探索第25集第25集》

That's one kind of a healing response that's natural.

这是自然的自愈过程
If that splinter was too deep

如果这块木屑刺入太深
it would just get totally

它就会完全
covered with a scar, scar all around it.

被疤痕组织包被周围都是疤痕组织
The cells that are in the scar tissue would be secreting enzymes

这些疤痕组织内的细胞会分泌
and digestive chemicals inside trying to dissolve the splinter.

各种酶和化学物质来消解木屑
If it was made of wood,

如果是木质的异物
eventually it would dissolve and it would completely disappear.

那它最终会被消解完全消失
If it's made of a synthetic polymer that doesn't respond--

但如果这是一种人工高分子材料不会被
or doesn't get digested by those chemicals

不会受到这些化学物质的影响而消解
what happens is that a stable scar

那接下来该材料周围
forms around this material that never disappears,

就会形成稳定且永不消退的疤痕组织