Definition
Used to acknowledge that something is no longer possible to obtain, keep, or achieve.
告別（某事物）；失去…的機會
Since he moved to another city, it's goodbye to our regular gatherings.
自從他搬到另一個城市，我們的定期聚會就結束了。
With the company declaring bankruptcy, the employees knew it was goodbye to their jobs.
隨著公司宣布破產，員工們知道他們的工作保不住了。
When she realized she missed the registration deadline, it was goodbye to her chance of participating in the race.
當她意識到錯過了報名截止日期時，她參加比賽的機會就沒了。