The fossils which area as yet undated, will now be on public display.

这些化石还有检测出确切的年份，现在它们将公开展览。

The note was undated, and without either signature or address.

这张便条有日，有签名地址。

It could just as easily be undated this time as another time.

这一次另一次一样容易被取消日。

I'd say notes like that are undated more often than not.

我会说这样的笔记往往有日。

Well, it's undated and without either signature or address.

它标日 有签名或地址。

But he kept a journal, which was a collection of dated and undated items on particular trips, thoughts, men, places, and events.

但是他写札记，遇有游山玩水、思想、物、处所、事件，他都笔之于书，有的记有日，有的不记日。