date back (to ...) 追溯到 【人教版高中英语必修一Unit 5（单词与全书例句）】

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1. His family history dates back to the 1700s. 他的家族历史可以追溯到18世纪。

2. It dates back several thousand years to the use of longgu—animal bones and shells on which symbols were carved by ancient Chinese people.

1. 他的家族历史可以追溯到18世纪。

2. 它可以追溯到几千年前中国古代人使用龙骨（动物的骨头和贝壳）雕刻符号的历史。