那时候有一个通俗的说法：“一个不少，两个正好，三个多了”。

There was a common saying at the time: "One is not many, two's just right and three's too much."

youdao

或者换种方式：脚踏实地（通俗的说法：变得现实），在干燥的地皮上保持坚定的程序。

Or, in another way, jiao ta shi di (roughly translated: get real). Keep your feet firmly on dry land.

youdao

用通俗的说法，陡的学习曲线表明同等量的学习需要付出很大而且还在增大的努力，即达到了自然极限。

A "steep" learning curve, in colloquial usage, usually means experiencing a large and increasing amount of effort for a constant amount of learning, i.e. approaching a natural limit.

youdao