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- 这个家族的历史可以追溯到十七世纪。
The family can trace its history to the 17th century.
- 该裁定可进行有追溯效力地运用。
The ruling is applied retrospectively.
- 该项法规具有追溯效力。
The legislation was made retrospective.
- 我们两国之间的往来可以追溯到上个世纪。
The assiciation between our two countries can be traced back to last century.
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