n.广播完毕的信号
I'm tired of the sound of your voice, sign off quickly. 我讨厌听你的声音，快别讲了。
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。
I'd better sign off now. Love John. 我得就此停笔。爱你的约翰。
I've written too much and had better sign off. 我已写得太多，还是就此结束吧。
I' d better sign off now. Love John. 我得就此停笔。爱你的约翰。
Are you sure you want to sign off all accounts? 您是否确定注销所有账号?
