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
Yes, I think I can in ordinary circumstances.
是的，一般情况下，我没有问题。
This offer remains open until 10th February, beyond which date the terms and prices should be negotiated anew.
此盘有效期至2月10日，超过此期限条件及价格需重新协商。
When she came in with the last course -- a huge pudding --
当她端着最后一道菜——一大盘布丁——