所谓的微小伤口是指肉眼看不到，但是显微镜下可以看得到的伤口。
That the so-called minor wound can not see the naked eye, but the wound can be seen under the microscope.
人类的指尖有时可以重新生长出来，而且伤口能愈合成微小的伤疤。
A human fingertip can sometimes grow back and cuts often heal with minimal scarring.
通常，人们总是非常关心手指上会不会有微小的伤口和他们所谓的开放性伤口。
People are generally very concerrned about the presence of tiny cuts on their fingers or around their finger-nails which they fear may pose an extra risk by being so called open wounds.
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