英語翻譯：

go against the river; recall

例句：

1. 他追蹤自己的世系上溯至一個(gè)古老的諾曼家族。
   He traces his descent back to an old Norman family.
2. 該項(xiàng)法規(guī)具有追溯效力。
   The legislation was made retrospective.
3. 我們兩國之間的往來可以追溯到上個(gè)世紀(jì)。
   The assiciation between our two countries can be traced back to last century.
4. 這個(gè)家族的歷史可以追溯到十七世紀(jì)。
   The family can trace its history to the 17th century.
5. 警方追溯了被謀殺者當(dāng)時(shí)的動作。
   The police retraced the movements of the murder victim.