advance starting signal的用法和样例：
- It will delay the start signal for six clock periods.
- The status or condition of being ready to run. A program, task, or hardware device that is in a ready condition needs only a start signal in order to begin operation.
- As we waited for the start signal that day,Chubby was prancing in place,alert and obviously eager to be running.
- When using the one start rule, any swimmer starting before the starting signal has been given shall be disqualified.