石弹

例句：

1. 1. The ancient city is surrounded by towering rocks.
   这个古老的城市被高耸的岩石包围。
2. 2. The rocky terrain made hiking difficult.
   崎岖的地形使得徒步变得困难。
3. 3. The rock formations are a wonder to behold.
   这些岩石形态令人惊叹。