Part programmers must have extensive knowledge of machining processes.
零件程序员必须有广博的加工工艺知识。
However, programmers must create their own object model and manage the SAX events.
然而,程序员必须创建他们自己的对象模型并管理SAX事件。
And before searching for data within a XML file, programmers must first open and parse the file.
在XML文件内搜索数据之前,程序员必须先打开和解析该文件。
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