名詞 potluck:

1. whatever happens to be available especially when offered to an unexpected guest or when brought by guests and shared by all

1. Shall we go out for dinner tonight? Or would you rather stay home and take potluck?
   咱們今晚是到外邊去吃飯呢？你還是愿意留在家里湊合著吃頓便飯？
2. If you don't mind, please come and take potluck with us.
   如果你不介意，請過來和我們一道吃點便飯吧。
3. Come along and take potluck with us.
   跟我們一塊兒吃頓便飯吧。
4. Having arrived unannounced for supper, we had to take potluck.
   由于沒有提前通知我們要來吃晚飯，我們只能吃些家常便飯

pot.luck

n.（名詞）
Whatever food happens to be available for a meal, especially when offered to a guest:
家常便飯：（非特意準備）碰巧有的飯菜，尤指給客人吃的：
例句：
Having arrived unannounced for supper, we had to take potluck.
由于沒有提前通知我們要來吃晚飯，我們只能吃些家常便飯

A meal at which each guest brings food that is then shared by all.Also called potluck supper
聚餐：每個客人都自帶食物然后大家分而食之的一頓飯也作 potluck supper
Whatever is available at a particular time:
運氣：在特定時刻只要是有的東西：
例句：
The scheduled flight was canceled and passengers had to take potluck on the other airlines.
原定航班被取消了，乘客們只能在其他航線上試試運氣