They cannot leave the country without permission.

没有许可他们不得离开这个国家。

《柯林斯英汉双解大词典》

There are many men, women and children who no longer are victims, but feel like they cannot leave it behind.

有许多不再是受害者的男人、女人和孩子，可是这些人感到无法将其抛在身后。

youdao

I cannot for the life of me imagine why they want to leave.

我怎么也想象不出他们为什么要走。

《牛津词典》

As you know, these are citizens who have been told they cannot leave Egypt.

WHITEHOUSE: Press Briefing

They cannot leave until white smoke emerges from the Vatican chimney -- the signal that a new leader has been picked.

CNN: Cardinals meet Monday, could set date to elect new pope

"They cannot leave the players isolated and afraid to speak out when they are confronted by the wrong individuals, " he told the Premier League team's website.

CNN: FIFA: Governments must help in match-fixing fight