First, some online courses on concrete structure design learning have some good online courses on concrete structure design learning. Many people are taking this course. When they are not used to what the teacher teaches, they will ask to recommend some more detailed and lively online courses. In fact, Principles of Concrete Design is a good book. Reading this book more is good for learning. And if you want to find some online courses about specific learning structure courses, in fact, the structure video of Laozi and Zhuangzi is a very good online course. When you can't understand what the teacher is saying, you can study after class when you want to study deeply. This online course is very good. Lao Zi and Zhuangzi talked about it in detail. And some websites are also very good videos for learning online courses. There are many professional online courses. You can go and have a look. They are free.
Second, learning depends not only on teachers, but also on yourself, so daily learning depends not only on teachers, but also on yourself. When the teacher doesn't understand what he says, he can review and summarize it online and find some useful online courses. But also combine what the teacher said. If the teacher speaks a little early, you can report to the teacher after class or go to the teacher with your own questions, and the teacher will definitely help you answer them. In normal times, you must use your own brain. Learn by yourself. Only by understanding can you remember deeply. Therefore, we should study with our brains in our daily life, don't always ask others, and use our own actions to understand the problem.