twelfth基數(shù)詞怎么寫

　　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(jì)。

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

　　照例，6月12日將會(huì)進(jìn)行地方及區(qū)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(jì)。