Waterfall model
[计] 瀑布模型
🧩 词语组成解析
🗣️ 情景例句
Well, vitamins or no vitamins, I enjoy walking in the sunshine. Let's go.
我不在乎有没有维生素，我喜欢在阳光下散步。走吧。
The two warring countries refused to negotiate.
这两个交战国拒绝谈判。
Yes, it's nice to be finished.
是啊，完成了真好。