boulder

The hikers carefully navigated around the boulder blocking the path.

徒步旅行者小心翼翼地绕过挡住路径的大岩石。

The beach was scattered with boulders smoothed by the waves.

海滩上散落着被海浪磨平的大岩石。

The massive boulder is believed to have been left behind by glacial movement thousands of years ago.

这块巨大的岩石被认为是数千年前冰川运动遗留下来的。