time-signal set

例句：

1. 1. The clock was set to the correct time by the engineer.
   工程师将时钟设置为正确的时间。
2. 2. The new software has a time-signal set that makes it easy to use.
   这款新软件具有易于使用的定时信号设置。
3. 3.The security system requires you to set your time-signal before entering the building.
   进入大楼前，你需要设置你的定时信号。