backadverb
The museum's collection includes artefacts dating back to prehistoric times.这家博物馆的藏品包括一些史前器物。
The country's monarchy dates back to the Middle Ages.
Guacamole dates back to the Aztecs, who called it ahuaca-mulli.鳄梨酱的历史可以追溯到古阿兹特克人时期，他们称其为阿华卡-穆利。
The region's unique fossil beds date back to the Pleistocene era.
This tradition dates back to medieval times.这个传统可以追溯到中世纪时期。

SMART Vocabulary: related words and phrases

Starting from a particular time
all along the lineidiom
as of/fromidiom
count
cut
cut in
date
date back
date from something
forth
forward
henceforth
hereafter
hereinafter
in futurephrase
line
live
onward
since
then
thereafter