Sasd
结构化分析和结构化设计
🗣️ 情景例句
Quality is more important that quantity.
质量比数量更重要。
It is not work that kills,but worry.
工作不会伤身，伤身乃是忧虑。
The hovercraft travelled first over the water, then mounted the beach,
气垫船先是在水面上行驶，后又登上海岸，