Ddf
[计] 数据库描述文件, 开发论证设施
🗣️ 情景例句
Remember my apple pie on Thanksgiving?
记得在感恩节我做的苹果派吗？
which direction is it to the theatre?
它哪个方向对剧院？
A bar of Chocolate.A bottle of milk.A pound of sugar.
一块巧克力、一瓶牛奶、一磅糖、