instant replay
noun [ C or U ] US uk/ˌɪn.stənt ˈriː.pleɪ/ us/ˌɪn.stənt ˈriː.pleɪ/ (UK action replay)
实时重放，慢镜头回放
a repeat of an important moment from a sports event shown on television, often more slowly to show the action in detail
Instant replay showed the ball was out. 慢镜头重放显示球出界了。
See also: replay noun