- 释义：
- n. 电离层
- 例句：
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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.
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Its upper limit is determined by the conditions in the ionosphere.
其上限由电离层的状态而决定.
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Rockets and artificial satellites can go far above the ionosphere.
火箭和人造卫星能够到达电离层以上极远的地方.
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