precursor

音标发音

Error is often the precursor of what is correct.
错误常常是正确的先导.
Real tennis, an ancient precursor of the modern game, originated in the eleventh century.
室内网球，现代网球运动的古老前身，起源于11世纪。
Error is often the precursor of what is correct, but conceit is the prelude to a fall.
错误往往是正确的先导, 骄傲是跌跤的前奏.
Error is often the precursor of what is correct.
错误常常是正确的先导.
Real tennis, an ancient precursor of the modern game, originated in the eleventh century.
室内网球，现代网球运动的古老前身，起源于11世纪。

something that happened or existed before another thing, especially if it either developed into it or had an influence on it

A precursor of something is a similar thing that happened or existed before it, often something that led to the existence or development of that thing.