un.dat.ed

undated的音标和读音：
DJ音标发音： [ʌnˈdeitid]
KK音标发音： [ʌnˈdetɪd]

undated的词性：
adj.（形容词）

1. Not marked with or showing a date:
未注明日期的：

an undated letter; an undated portrait.
未写日期的信；未标日期的画家

2. Being such as to have long-lasting appeal without ever going out of style:
无限期：生命力持久的；未落伍的：

a classic, undated dress.
古典而始终流行的衣服