holarctic origin

例句：

1. 1.The discovery of the dinosaur fossils in the Arctic region has led to a new understanding of their origins.
   在北极地区的恐龙化石的发现，已经导致了对它们的起源的新的理解。
2. 2. The Arctic region is known for its unique wildlife and climate, which has contributed to its holarctic origin.
   北极地区以其独特的野生动物和气候而闻名，这对其北极起源有所贡献。
3. 3. The holarctic origin of the species is crucial for understanding its evolutionary history.
   物种的北极起源对于理解其进化历史至关重要。