1. North Yemen was a separate country until its unification with South Yemen in 1990.
北也门是一个独立的国家，直到1990年与南也门统一。

2. The capital of North Yemen was Sana'a, which remains the capital of Yemen today.
北也门的首都是萨那，现在仍然是也门的首都。

3. The conflict in North Yemen during the 1960s and 1970s had lasting effects on the region.
20世纪60年代和70年代在北也门的冲突对该地区产生了持久的影响。

4. North Yemen was known for its rugged mountainous terrain and ancient cities.
北也门以其崎岖多山的地形和古老的城市而闻名。

5. The people of North Yemen have a rich cultural heritage that dates back thousands of years.
北也门的人民拥有悠久的文化遗产，可以追溯到数千年前。

6. Traveling to North Yemen can be a rewarding experience for those interested in history and culture.
对于对历史和文化感兴趣的人来说，前往北也门旅行可能是一次令人满足的经历。