unexampled造句

1、A time of unexampled prosperity.
一个史无前例的富裕时代。

2、a time of unexampled prosperity
一个史无前例的富裕时代

3、It has various advantages that are unexampled other kind of navigation equipment.
它所具有的诸多优点是其他导航设备所无法比拟地。