在人类干扰较少时，现代侵蚀应为正常侵蚀，而在植被受到破坏时，就有可能产生加速侵蚀。
When little disturbance of human activities was, modern erosion must be natural erosion. But if the vegetation is destroyed, then the accelerating erosion may take place.
其它的CT表现包括骨侵蚀和破坏，增强的软组织肿块、与正常组织清晰的过度带、MR对于确定肿瘤受累区域是非常有帮助的。
Other CT findings include bone erosion and destruction, an enhancing soft-tissue mass, and a sharp zone of transition to normal tissue. MR imaging is optimal for depicting areas of tumor involvement.
目前还未有人坐在上面刚巧遇上岩石崩塌的情况，这不是因为判断力好，纯粹是走运，因为风化侵蚀是当地十分正常的自然现象。
It is purely down to luck rather than judgment that no one has been sitting on these chunks of rock when the ground has given way. For erosion is a fact of life here.
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