这次成功是空前绝后的。
This success is unprecedented.
unprecedented and never to be duplicated; the first and the last; unmatched
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
这次成功是空前绝后的。
This success is unprecedented.
他创造了空前绝后的纪录。
He set an unprecedented record.