From "again and again, not again and again"

Language is a long-term evolution of human beings, which comes from social communication and practice. Nowadays, Chinese is one of the most profound and difficult languages to learn.

During the formation and evolution of Chinese, there are many idioms, proverbs and common sayings, which are the crystallization of the wisdom of ancient working people in the process of practice.

There is a saying called "time and again", not time and again. The original meaning refers to the same thing or mistake, only once or twice, not three or four times, not making the same mistake many times. This sentence is from Wu Cheng'en, The Journey to the West.

Similarly, there is the article "Debate on Cao Gui" in the Ten Years of Zuo Zhuan and Zhuang Gong.

In fact, one, two and three are empty fingers, not real ones.

There is also an idiom, "Kill one thousand and lose eight hundred". Are they really 1800? Otherwise1000,800 are all empty fingers.

For example, we teach children to slow down, watch, pass, stop at the red light and go at the green light when crossing the road.

Usually at home or in class, children have no intuitive feelings and may not have deep memories.

If you can personally lead your child to participate in a traffic activity, the child will be deeply impressed and feel the importance of participating in traffic activities more intuitively. In the future, it will be possible to reduce or completely avoid accidental injuries caused by children participating in traffic activities alone.

Another example is science and technology public relations. If you miss the first and second chances, try not to miss the third. Actually, it's not like this. In aviation activities, the rocket launch cannot be sloppy, and there is no chance to come back for the second time.

This first time and the second time are also empty fingers. Every opportunity to tackle key problems in scientific research is accompanied by numerous repeated practices. Behind every scientific research achievement is the sweat and even blood of countless researchers.

Good at summing up experience and lessons, good at changing the fixed way of thinking in the past, and innovative. Only in this way can we continuously achieve fruitful scientific research results.