所以，当皮肤割伤后会自动结疤愈合，这就是合成代谢在起作用。

So when you cut yourself and your skin scabs over and heals, you're seeing anabolism at work.

youdao

如果你的皮肤被割伤了，它会很快痊愈并阻止病毒进入你的身体。

If you have your skin cut, it will have a quick cure and stop viruses from getting into your body.

youdao

自我伤害是通过故意造成刮痕或用利器割伤自己，以破坏皮肤，使之流血。这称之为切割。

Injuring yourself on purpose by making scratches or cuts on your body with a sharp object - enough to break the skin and make it bleed - is called cutting.

youdao

If you get bacteria under your skin, if you get a cut and somehow that cut gets - bacteria gets inside there, the bacteria can reproduce on their own.

如果你皮肤里有细菌,而你又割伤了自己,并让细菌进入了伤口,细菌自身就可以繁殖

耶鲁公开课 - 生物医学工程探索课程节选