If you restart something that has been interrupted or stopped, or if it restarts, it starts to happen or function again.
例句
The commissioners agreed to restart talks as soon as possible...委員們同意盡快重新開始會(huì)談。The race was restarted after a break of around 20 minutes...在中斷了大約20分鐘后，比賽又重新開始了。