list deletion 表删除
deletion from linear list 从线性表删去
deletion from doubly linked list 从双链接表删去
deletion from two dimensional list 从二维表删去
The last item in that list, namely the deletion of Amazon AMI instances, is particularly important since organizations pay for the use of these instances.
上述的最后一项（即删除 Amazon AMI 实例）尤其重要，因为组织必须为使用这些实例付费。
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