The anchor signed off with a heartfelt message.

主持人以一段真挚的话语结束了节目。

The approver signed off on the project proposal.

批准者签署了项目提案。

When I first got it home, I would keep it on until stations signed off for the night.

当我第一次把它带回家的时候，我把它一直开到电台停播为止。

My partner signed off with four spades.

我的搭挡故意叫黑桃四,以示关门.

My partner signed off with four diamonds.

我的搭档故意叫四方块，以示关门。

The hosts thanked me for being on and signed off.

主持人向我表示感谢并宣布广播结束.

Station WRC is off the air now. They signed off two hours ago.

WRC电台现在已经停止播音. 广播是在两小时前结束的.

Station WRC is off the air now. They signed off two hours ago. WRC

台现在没节目了，它在两个小时前广播结束了。

Station WRC is off the air now. They signed off two hours ago. WRC.

台现在没节目了，它在两个小时前广播结束了。

But first, I had to get the signed-off support of all department heads.

但是首先，我必须得到所有部门领导的签字支持。