Ddf
[计] 数据库描述文件, 开发论证设施
🗣️ 情景例句
Good night, Susan.
晚安， Susan。
How long does it take?
火车要开多久？
A truly dedicated bargain hunter must have patience, and above all, the ability to recognize the worth of something when he sees it.
一个到处找便宜的人必须具有耐心，而且最重要的是看到珍品时要有鉴别珍品的能力。