单词	tundra
释义	tundra /ˈtʌndrə / noun A vast, flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen: [as modifier]: tundra vegetation... Ruffs breed in sub-Arctic and Arctic tundra meadows in northern Europe and Siberia. North Asia is an arctic tundra, not a recommended neighborhood to live in, in the winter time. In North America, the Arctic tundra is expected to retreat northwards and be replaced by forest. Origin Late 16th century: from Lappish.
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