probev_timestamp_t是一种特殊的数据类型，用来从VUE时间戳函数返回值。

probev_timestamp_t is a special data type used to return the value from the VUE timestamp function.

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返回值的意义取决于钩子类型。

The meaning of the return value depends on the hook type.

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返回值的意义取决于钩子类型。

The meaning of the return value depends on the hook type.

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