野生动物保护组织正在努力重新引入狼群以恢复这片森林的生态平衡。

Wildlife conservationists are working to ___re-populate the forest with wolves to restore its ecological balance.

系统更新后，我们必须重新填充所有的用户数据。

After the system update, we had to ___re-populate all the user data.