noun 下载 🔗分享 冰期,冰河时期 A glacial period (colloquially known as an ice age). Examples : "During the last series of glacials, large parts of North America were covered in thick ice sheets. " 在最近一轮的冰河时期,北美洲的大部分地区都被厚厚的冰盖覆盖着。 geology geography environment world nature science history age period 与AI对话词汇游戏阅读练习