整形外科医生都知道，这一点是必须的，因为骨头碎片粘合时如果出现几毫米的缝隙，伤口将不会愈合。
That is necessary, as any orthopaedic surgeon knows, because if a gap of more than a few millimetres is left between fragments the bone will never heal.
当它们愈合的时候，我种感觉不好——因此，我不会‘清洗它们’，而是再次隔开伤口。
I felt kind of bad when they started to heal - and so I would 'freshen them up' by cutting again.
割伤或烫伤的伤口愈合以后，会留下疤痕或印痕，自伤的人通常掩藏这些伤口，有时不会有他人知道他们自伤。
When cuts or burns heal, they often leave scars or marks. People who injure themselves usually hide the cuts and marks and sometimes no one else knows.
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