18.For three months, she had to travel around the country on buses and trains waiting for the perfect opportunity to cross the Pyrenees Mountains undetected.
20.The Basque region, or Euskal Herria, has shifted its borders often throughout its long history, but it broadly encompasses the region around the western Pyrenees Mountains.
巴斯克区, 或 Euskal Herria, 在其悠久的历史经常改变其边界,但它广泛涵盖了西比利牛斯山脉周围的区。机翻