a. having no precedent; novel
a. 空前的
[经] 空前的, 无前例的
1. This year has seen unprecedented changes in our daily lives.
今年在我们的日常生活中经历了前所未有的变化。
2. The company reported unprecedented profits last quarter.
该公司在上个季度报告了前所未有的利润。
3. The storm caused unprecedented damage to the city.
这场风暴对城市造成了前所未有的损害。