twelfth基數詞怎麼寫

例句

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

英國最早嘗試在愛爾蘭開拓殖民地是在12世紀。

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

照例，6月12日將會進行地方及區域選舉。

The tower, incidentally, dates from the twelfth century.

那座塔，順便提一下，可以追溯到12世紀。