did … or not, after all
到底有没有?
Does it actually exist?
— 精英部队2：大敌当前 (2010)
当然，我不在他拿到钱的时候，所以谁知道他到底有没有真拿到五十个便士。
Of course, I wasn’t there when he got the money, so who knows whether he really got fifty pence.
回答我的问题，到底有没有？
Answer my question—do you have it or not?
— 搏击俱乐部 (1999)
他们后来到底有没有回到家？
Did they ever make it back home?
到底有没有事？
Is something actually wrong?
— 维多利亚 (2015)