to use an Internet program to test whether a computer you are trying to connect with is working properly 网络封包探索器检测
() to send sb a type of electronic message similar to an email that appears on their screen as soon as it is sent (an instant message) 发送即时电子信息◆Employees can ping each other questions and requests. 员工可以发送即时电子信息相互提出问题和请求。
▸ping
noun
[] () ◆An ‘away message’ tells other users that you're around, but not taking pings. 一条“离开信息”让其他用户知道你在附近，但不能接收即时信息。