There remains the change in the value of the equipment, due to unforeseen changes in market values, exceptional obsolescence or destruction by catastrophe, which is both involuntary and-in a broad sense-unforeseen.

由于市场价值的不可预见的变化、异常的过时或灾难造成的破坏，设备的价值仍然存在变化，这既是非自愿的，也是广义上不可预见的。