The event handler will calculate and save the new value for the WjcCounter property.
事件处理程序将为WjcCounter属性计算和保存新值。
When you calculate the value of the car you must allow for wear and tear.
计算这辆车的价值时，必须考虑到它的损耗情况。
When you calculate the value of the car you must allow for wear and tear.
计算这辆车的价值时，必须考虑到它的损耗情况。
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