D region
【物理学】D 区(离地球表面约60～90公里处的电离层的最低部分)[亦称作D layer]
🧩 词语组成解析
🗣️ 情景例句
He's a very famous person in Chinatown. He's also from your home city, Peking.
他在唐人街大名鼎鼎，他也是从你的家乡北京来的。
You must come right away.
你必须马上过来。
When he got married, Alf was too embarrassed to say anything to his wife about his job.
艾尔弗结婚时，感到非常难为情，而没有将自己的职业告诉妻子。