它包含了原始内存中对象的所有内容和引用结构。
It retains all the content and references structure of the original in-memory object.
对于内存泄漏的一个简单测试是，在某天的最后一次测试之后让系统继续运行；如果到第二天，该系统恢复到了原始状态，那么您通常可以排除泄漏。
A simple test for memory leaks is to leave the system running after the last test of the day; if the system has recovered to the original state by the next day, then you can often rule out a leak.
额外的数据溢出到预期存储区附近的内存中，并且覆盖与该区域的原始用途无关的数据。
The extra data spills over into memory near the intended storage area and overwrites data that may have nothing to do with that area's original purpose.
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