派兵驻守

例句：

1. 4.
   在…上
2. 1. The soldiers wereposted at the border to guard against intruders.
   士兵们被派驻边境，以防入侵者。
3. 2. The post office is closed for repairs.
   邮局因维修而关闭。
4. 3. He wasappointed as a postmaster.
   他被任命担任邮政局长。