传说中，龙守护着山洞里的宝藏。

Legend says the ___dragon guards treasures in the cave.

我们学校的女校长是个让学生闻风丧胆的母老虎。

The female principal of our school is a real ___dragon that all students fear.

这把古剑的剑柄上雕刻着一条精美的金龙。

The antique sword's hilt is carved with an exquisite golden ___dragon.