英语词汇D region怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	D region
释义	D regionn.（名词） The region of the ionosphere about 40 to 65 kilometers (25 to 40 miles) above the earth.D区：电离层中处于地球表面以上40至65公里(25至40英里）的部分
随便看	measurements measures measuring measuring worm meat meat meat and potatoes meat-and-potatoes meatball meated Meath meathead meat hook meatier meatiest meating meatless meat loaf meat market meatpacking meats meatus meatuses meaty meat–and–potatoes

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