英語翻譯

• go upstream
• trace the source

泝的意思解釋

實用例句

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