Waterfall model
[计] 瀑布模型
🧩 词语组成解析
🗣️ 情景例句
You don't have to work yourself sick.
你不必让自己工作到病倒。
You get what you pay for.
便宜没好货。
Professor Ronald Bracewell, a leading American radio astronomer,argued in Nature that such a superior civilization, on a visit to our own solar system,
假如有如此高级文明生命访问了我们的太阳系，