单词 | ionosphere |
释义 | DEFINITIVE EXAMPLES 权威例句〔D layer〕The lowest layer of the ionosphere, existing only during the day.D层:电离层的最底层,只有日间存在美国传统〔REFLECT〕When atmospheric conditions are right, radio waves bounce off the ionosphere and can be received many thousands of miles away. 在适当的大气条件下,无线电波从电离层反弹回来,在数千英里之外都可以接收得到。朗文写作活用 |
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