Replacement字段在字符串内由花括号()标示。

Replacement fields are denoted by curly brackets () inside a string.

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图2中的截图高亮度标示了一个内存泄漏(字符串对象正在泄漏)，连同泄漏的包装形态(矢量对象)和根(TestThreeTierQueue对象)。

The snapshot in Figure 2 highlights a memory leak (String object is leaking), along with the leak's container type (Vector object), and root (TestThreeTierQueue object).

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