空前绝后的英文：
[Literal Meaning]
empty/before/end/after
to be never known to before and never to occur again

[解释]
从前没有过，今后也不会再有。形容独一无二。

[Explanation]
to be unprecedented and unrepeatable

[例子]
这次有一百个明星参加的演出是空前绝后的。

[Example]
The show of 100 stars this time was really unprecedented and unrepeatable.

The splendor of King Solomon passed anything before or since.
所罗门王的荣耀是空前绝后的。