"Permafrost expands dramatically like ice freezing in winter, causing road surfaces to bulge, while in summer, it contracts rapidly like melting ice, leading to the sinking of the surfaces," said ...
"Permafrost expands dramatically like ice freezing in winter, causing road surfaces to bulge, while in summer, it contracts rapidly like melting ice, leading to the sinking of the surfaces," said ...
"Permafrost expands dramatically like ice freezing in winter, causing road surfaces to bulge, while in summer, it contracts rapidly like melting ice, leading to the sinking of the surfaces ... "This ...