be useful for

• This step type is useful for overriding the
  此步骤类型对于重写
• Versions and timestamps are useful for synchronization purposes
  版本和时间戳对于同步目的很有用。
• What measures do you think are useful for keeping good health
  你认为什么方法对保持健康是有益的？
• It is useful for teaching regular expressions and state machines
  它有助于讲授正则表达式和状态机。
• This property is useful for debugging
  该属性对调试很有用。
• These cards are useful for you
  那您就需要用到下面的介面卡
• The research results is useful for selecting sawing parameters
  该研究有助于更加合理地选择锯切参数。
• These panes are useful for working with both queries and views
  这些窗格对于处理查询和视图非常有用。
• Read - only attributes are useful for exposing metrics or states
  只读属性对于开放度量或者状态很有用。
• This might be useful for performing system maintenance tasks
  对于执行系统维护任务，这一点可能很有用。