"很早就提出" 这个短语的英文翻译是 "proposed long ago"。

这个短语的来源是英文 "propose" 和 "long ago" 两个单词的结合。"Propose" 是一个动词，意思是提出，建议，做出打算。"Long ago" 是一个短语，意思是很久以前。

下面是一些使用 "proposed long ago" 的英文例句，以及其中文翻译：

"The idea of building a bridge across the river was proposed long ago, but it wasn't until recently that it finally became a reapty."（建造桥梁的想法很早就提出了，但直到最近才真正实现。）

"The concept of using renewable energy sources was proposed long ago, but it wasn't until the 21st century that it really started to gain traction."（使用可再生能源的概念很早就提出了，但直到21世纪才真正开始流行起来。）

"The theory of evolution by natural selection was proposed long ago by Charles Darwin, and it has since become one of the most widely accepted scientific theories in the world."（自然选择的进化理论很早就由查尔斯·达尔文提出，自那时起它就成为了世界上最广受接受的科学理论之一。）