Definition
To accept the loss or cessation of something; to acknowledge that something will no longer be available or attainable.
告别，放弃
Since I started working full-time, I had to say goodbye to leisurely mornings.
自从开始全职工作后，我不得不告别悠闲的早晨。
If we don't book soon, we can say goodbye to getting a room in this hotel.
如果我们不赶快预订，就别想在这家酒店订到房间了。
With the change in company policy, I had to say goodbye to flexible work hours.
随着公司政策的改变，我不得不告别弹性的工作时间。