major fault zone

例句：

1. 1. The earthquake caused a major fault zone in the area.
   地震在该区域造成了主要断层带。
2. 2. The geologists are studying the major fault zone to understand its potential impact on the region.
   地质学家正在研究主要断层带以了解其对该地区的潜在影响。
3. 3. The major fault zone is responsible for the frequent earthquakes in the area.
   主要断层带是该地区频繁地震的原因。