We also need to understand exactly what happens during the run.
我们还需要准确理解运行时所发生的事情。
To run the Web services example, you also need to install.
要运行Web服务示例，还需要安装。
If you need to, the buses also run quite frequently.
若是有必要的话，公车也是相当的频繁。
If you need to, the buses also run quite frequently.
若是有必要的话，公车也是相当的频繁。
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