frigid area造句怎麼寫

Permanently frozen subsoil, occurring throughout the Polar Regions and locally in perennially frigid areas.

It is a world wonder to build a railway in the most frigid area of frozen soil with the highest elevation and most fragile ecological environment.

According to the test data of Changping road, it offers the limitation about porosity of the asphalt surface course on expressway in frigid areas.