That TV newscaster always signs off by saluting.

那个电视新闻播音员总是向观众敬个礼表示节目结束.

The radio station signs off every night by playing the national anthem.

电台每晚以国歌来结束一天的播音节目.

So begin each project with a written outline of who is responsible for what, and make sure everyone, including the boss, has a copy and signs off on it.

所以在每一个项目开始之前，用书面方式列出每个人的职责，同时确保所有人，包括上司本人在内，人手一份，并在上面签字。