twelfth基数词怎么写

例句

The first British attempt to colonize Ireland was in the twelfth century

英国最早尝试在爱尔兰开拓殖民地是在12世纪。

As usual there will be the local and regional elections on June the twelfth

照例，6月12日将会进行地方及区域选举。

The tower, incidentally, dates from the twelfth century.

那座塔，顺便提一下，可以追溯到12世纪。