Mdb
abbr. 元数据库（Meta Datase）
🗣️ 情景例句
Ten o'clock tomorrow morning.
明早十点钟。
Can you keep an eye on the baby while I go shopping?
你能否在我上街买东西的时照看一下孩子？
The doctor began to operate on the boy.
医生开始给那个男孩动手术。