ionosphere
US /aɪˈɑː.nəˌsfɪr/
UK /aɪˈɒn.əˌsfɪər/
名詞
電離層
the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves
範例:
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Radio signals can bounce off the ionosphere.
無線電訊號可以從電離層反射。
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The ionosphere plays a crucial role in long-distance radio communication.
電離層在長距離無線電通訊中起著至關重要的作用。