ionosphere [ai'ɔnəsfiə]以下由轻松背单词网站提供
单词级别附加级基本释义n.电离层参考例句The ionosphere is that region of space contatining electrically charged species. 电离层是指含有带电物质的空间区域。Its upper limit is determined by the conditions in the ionosphere. 其上限由电离层的状态而决定。 推荐阅读 |