the best thing since sliced bread
自面包切片以来最好的事物；非常好的事物
口语·赞美创新或新产品
英文释义
something or someone considered to be highly impressive or innovative
例句
This new app is the best thing since sliced bread; it saves me hours every week.
典故来源
源自1920年代面包切片机发明后，人们认为这是极大便利的发明，后用来比喻任何令人赞叹的新事物。