Mdr
abbr. 日最低需要量（Minimum Daily Requirement）；存储数据寄存器（Memory Data Register）；多路数据记录器（Multichannel Data Recorder）
🗣️ 情景例句
In the Spring and Autumn period, copper and iron chopsticks came into being.
在春秋时代又出现了铜制和铁制的筷子。
He who lives in glass house should not throw stones.
正人先正己。
She is a composer for the harp.
她是位写竖琴曲的作曲家