ionosphere
US /aɪˈɑː.nəˌsfɪr/
UK /aɪˈɒn.əˌsfɪər/
名词
电离层
the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves
示例:
•
Radio signals can bounce off the ionosphere.
无线电信号可以从电离层反射。
•
The ionosphere plays a crucial role in long-distance radio communication.
电离层在长距离无线电通信中起着至关重要的作用。