求翻译：轮胎内的“暗伤”原因，车辆与硬物发生冲撞后例如撞在便道边沿上，或在瘪胎状态下行驶后、轮胎的橡胶层会有严重划痕，影响密封程度。在此情况下，轮胎会漏气、破裂。如创面较小，当然可以修补，以应不时之需，但若想长途行驶则必须立即更换是什么意思？

"Invisible injury" because the tire, vehicle and a hard object collision, for example, hit the pavement edge, or traveling in the deflated tire condition, tire rubber layer can have serious scratches and sealing. In this case, the tire will leak, rupture. Such as small wounds, of course, can be mend