eighteenth [ˌeɪ'ti:nθ]

以下由轻松背单词网站提供

adj.第十八的；num.第十八

18th written as a word

I will meet you on the eighteenth next month. 我下月十八号和你见面。
We had a birthday party on my eighteenth birthday. 在我18岁生日时，我们举办了一个生日晚会。