sign off

动词 sign off:

1. cease broadcasting; get off the air; as of radio stations

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