This sentence is what Confucius said in the discussion about learning and being an official at that time about Lutz offering a lamb as a sacrifice. Do we understand? Learning well is being an official? You can't separate it from the previous sentence, because they are the premise and purpose of each other. Without one of them, the truth is untenable. Whether studying for an official or being an official after studying, it is a combination of official and learning, and the two are inseparable. Only by combining the two can we understand them better.
Learning well is being an official? In this sentence? Excellent? Does not mean excellent, but means spare capacity. When we have spare time after studying, we can choose to be an official, so that we can give full play to what we have learned and combine theory with practice in the process of learning, otherwise we will eventually study hard and fail to achieve the ultimate goal of reading. Moreover, in ancient times, when science and technology were underdeveloped, the knowledge learned was more inclined to liberal arts. Therefore, the best way to bring this knowledge into play is to be an official. As an official, you can learn all kinds of things that you can't learn by reading, increase your knowledge and have a deeper understanding of what you have learned.
Therefore, we should not just study, but must combine theory with knowledge, so as to exert the power of knowledge, constantly improve ourselves and make more contributions to the country.