Mdb
abbr. 元数据库（Meta Datase）
🗣️ 情景例句
At six you're meeting, Mr. Ozawa.
六点钟 ，要会见Ozawa先生。
A cracked bell can never sound well (is never sound).
破钟无好音。
Late in the afternoon, the boys put up their tent in the middle of a field.
傍晚时分，孩子们在田野中央搭起了帐篷。