noun 下载 🔗分享 散逸层,外逸层 The uppermost layer of a planet's atmosphere Examples : "Satellites orbit Earth within the exosphere, where the air is extremely thin. " 人造卫星在地球的散逸层内运行,那里的空气极其稀薄。 space astronomy environment science weather 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 外逸层,散逸层 An extremely thin atmosphere, as on Saturn's moon Dione Examples : "Because Saturn's moon Dione has such a weak and thin atmosphere, scientists classify it as an exosphere. " 由于土星的卫星土卫四拥有如此稀薄的大气层,科学家将其归类为外逸层/散逸层。 astronomy space science environment 与AI对话词汇游戏阅读练习