be useful to

• Queries are useful to find the current status on work items
  查询对于查找工作项的当前状态很有用。
• There are many other classes that might be useful to you , such as
  还有许多其他类可能对您有用，例如
• Choose words that are useful to you
  要选择对你有用的单词。
• Why would that be useful to caesar
  为什么这对恺撒有好处？
• He cultivates the sort of people who can be useful to him in his business
  他结交对他的事业有用的人。
• For example , it may be useful to use a string with an indexer
  例如，对索引器使用字符串可能是有用的。
• Thus , it might be useful to become root to execute the command
  因此，成为根用户去执行命令可能会有用。
• Describes tools that are useful to developers and administrators
  介绍对开发人员和管理员很有用的工具。
• A null value is useful to indicate an undefined or unknown value
  空值对于指示未定义的或未知的值很有用。
• It is useful to the air - conditioning load control measures
  对于提出空调负荷调控措施具有实际的参考价值。