noun 下载 🔗分享 冻原,苔原。 A flat and treeless Arctic biome. Examples : "The vast, flat tundra stretched out before us, a treeless plain of snow and ice. " 我们眼前展开的是一片广阔平坦的冻原/苔原,一片由冰雪覆盖的无树平原。 geography environment nature 与AI对话词汇游戏阅读练习