checkpoint and restart procedure

例句：

1. 1. Thesoldiers checked the checkpoint before entering the city.
   士兵们在进入城市之前检查了检查站。
2. 2.The train stopped at a checkpoint to allow passengers to disembark.
   火车在一处检查站停下，让乘客下火车。
3. 3. The police checkpoint was manned by armed guards.
   警察检查站由武装警卫看守。
4. 1. After the power outage, we had to restart the computer.
   电力中断后，我们必须重启电脑。
5. 2. The car engine has been restarted and is ready for use.
   汽车发动机已经重新启动，可以投入使用了。
6. 3. The software needs to be restarted after an update.
   软件更新后需要重新启动。