signed off

sign off
v.
停止广播, 停止活动

1.To announce the end of a communication; conclude.
宣布广播结束；结束
2.To stop transmission after identifying the broadcasting station.
在说完广播电台台名之后停止播送
3.Informal To express approval formally or conclusively:
【非正式用语】 正式同意：正式或结论性地表示同意：
got the Congress to sign off on the tax proposal.
使国会正式同意这项税务提案

sign off:

vi. (停播,停止活动)

例句与用法:
1. I'm tired of the sound of your voice, sign off quickly.
我讨厌听你的声音，快别讲了。

2. After ten year, I at last decided to sign off and go into business by myself.
十年后，我终于决定退出该公司，自己去做生意。