总统办公室与国防部之间设有紧急热线，以便快速应对突发情况。

There is an emergency ___hotline between the president's office and the defense department for rapid response to crises.

如果你遇到家庭暴力问题，可以拨打24小时求助热线。

You can call the 24-hour ___hotline if you experience domestic violence issues.