Ddf
[计] 数据库描述文件, 开发论证设施
🗣️ 情景例句
Sign here, where I've indicated.
签在这里，在我指的地方。
I will be going to school in a few weeks from now.
我将在几个星期后上学去。
Have you had any breakfast yet?
你吃过早餐了吗？