subtree [səbt'ri:]

例句:

• The newsgroup subtree is already assigned to another virtual directory.
  新闻组子目录树已分配给其他虚拟目录.
  
• No process in the command subtree has a signal handler.
  命令子树中的进程没有信号处理程序.
  
• Cannot save subtree: Error reading a registry value's contents.
  无法保存子树目录: 读取注册表值的内容出错.