big deal

US /bɪɡ diːl/
UK /bɪɡ diːl/
"big deal" picture
1.

大事, 大不了的

something important or significant

:
Getting this promotion is a really big deal for my career.
獲得這次晉升對我的職業生涯來說是件大事
It's no big deal if you can't make it to the party.
如果你不能來參加派對,那沒什麼大不了的
2.

那又怎樣, 沒什麼大不了的

used ironically to suggest that something is not as important as someone thinks

:
So you got a new phone, big deal. Mine is better.
所以你買了個新手機,那又怎樣?我的更好。
You finished the report an hour early? Big deal, everyone else finished yesterday.
你提前一小時完成了報告?那又怎樣,其他人昨天就完成了。