基本上，它的工作就是将其输入数据对象的内容(特别是附件)写出到系统输出上。

Essentially, its job is to write out the contents (especially the attachment) of its input data object to the system output.

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它的各个类和接口为数据流提供了系统输入和输出。

Its various classes and interfaces provide for system input and output for data streams.

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另外，每天或每周要处理系统利用率的快照和LTP测试输出文件并得到数据分数，以确定系统在长时间运转中性能是否下降。

In addition, snapshots of system utilization and LTP test output files were taken daily or weekly to have data points to determine whether systems were degrading during long-period runs.

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