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
How's my grandson?
我的孙子怎样啦？
Do you like plays?
你喜欢看戏？
From a heavy gun that was raised, the captain realized that the ship must have been a cruiser.
从捞起的一门大炮来看，船长认为那艘船一定是艘巡洋舰。