| 例句 |
The origins of the custom are difficult to trace.很难追溯这种风俗的起源。He had to back down on plans to backdate the tax changes.他不得不放弃追溯税收调整的计划。The book traces the development of philosophy.该书追溯了哲学的发展过程。Because of a grandfather clause, the strict emission standards only apply to new cars.根据不追溯条款，这一严格的排放标准只适用于新车。In the opening chapter, the author traces the development of judo from its ancient roots.在开头的一章里，作者追溯了柔道从古代起的发展过程。The book traces centuries of debate over the origins of language.这本书追溯了几个世纪以来关于语言起源的争论。It's easier to trace ancestors if you know their birth or death dates.如果知道祖先的生卒日期，追溯起来就容易多了。 |