史无前例的壮举 meaning in English

unparalleled feat

First of all , i am most delighted to report that our 65th anniversary celebrations came to a fruitful close in the final month of last year . recapping on those festive celebratory events , the human rainbow was undoubtedly the most unprecedented endeavour
首先，我要向大家报告本校纪念创校六十五周年的庆祝活动，已于去年年底圆满结束。回顾连串多姿多彩的庆祝活动，最令人津津乐道及具特别意义的，无疑是理大画出彩虹这项史无前例的壮举。
First of all , i am most delighted to report that our 65th anniversary celebrations came to a fruitful close in the final month of last year . recapping on those festive celebratory events , the human rainbow was undoubtedly the most unprecedented endeavour
首先，我要向大家报告本校纪念创校六十五周年的庆祝活动，已于去年年底圆满结束。回顾连串多姿多彩的庆祝活动，最令人津津乐道及具特别意义的，无疑是理大画出彩虹这项史无前例的壮举。