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
There's a big market today in wedding dresses.
结婚礼服在目前有很大的市场。
From hearing comes wisdom; from speaking, repentance.
多听增智慧，多言生后悔。
and you can be sure that none of our five advisers would have suggested sinking all(or perhaps any) of your money into Periwigs.
可以相信5位经纪人中不会有人建议你把全部（或一部分）资金投入佩里威格斯公司。