be the best thing since sliced bread
US /bi ðə bɛst θɪŋ sɪns slaɪst brɛd/
UK /bi ðə bɛst θɪŋ sɪns slaɪst brɛd/

1.
自切片面包以来最好的东西, 非常棒的东西
to be an excellent person or thing; to be extremely good or useful
:
•
My new smartphone is the best thing since sliced bread; it does everything!
我的新智能手机是自切片面包以来最好的东西;它无所不能!
•
She thinks her new boss is the best thing since sliced bread.
她认为她的新老板是自切片面包以来最好的东西。