Scientists in Britain say one of the oldest known examples of a spider web has been discovered in amber deposits found on the southern coast of England. Writing in the Journal of the Geological Society, the researchers say the amber dates back 140 million years.

英国科学家称在英格兰南部海岸的一枚琥珀中发现最古老的蜘蛛网。在地质学社会期刊中，研究人员称，该蛛网有1.4亿年的历史.




date back (to...):to have existed since a particular time in the past or for the length of time mentioned 追溯到;始于;自...至今

The college dates back to medieval times.

这所学院创办于中世纪.

The custom dates back hundreds of years.

这一习俗可以追溯到几百年前.