closed anticline

例句：

1. 1. The mountain range is characterizedby its closed anticlines and faults.
   这座山脉以其闭合褶皱和断层而闻名。
2. 2. The geological survey revealedthat the closed anticlines are responsiblefor the formation of the underground caverns.
   地质调查发现，闭合褶皱是形成地下洞穴的原因。
3. 3. The closedanticlines play acrucial role in the movement oftectonic plates.
   闭合褶皱在板块运动中起着至关重要的作用。