Minor cuts and scrapes can usually be left uncovered to heal by themselves.

小的割伤和擦伤不用覆盖任何东西，会自行愈合。

《柯林斯英汉双解大词典》

He's going to be just fine. At his age he'll heal in no time.

他会好起来的。以他的年纪，会很快痊愈。

《柯林斯英汉双解大词典》

Cuts that need to be held closed in order to heal properly have generally been held closed with stitches.

为了正确愈合，需要闭合的伤口通常用缝针缝合。

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That doesn't heal naturally but can be reformed by other enzymes called ligases, ligases re-established the phosphate bonds.

这不能恢复如初,但用连接酶可以做到这一点,连接酶能重建磷酸键

耶鲁公开课 - 生物医学工程探索课程节选

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