珠穆朗玛峰是世界上最高的自然地貌之一。

Mount Everest is one of the highest ___landforms in the world.

这个国家以其多样的地貌而闻名，包括山脉、峡谷和沙漠。

This country is famous for its diverse ___landforms, including mountains, valleys, and deserts.