"In observational studies, we often have to rely on assumptions that are not directly testable."
钢铁行业不仅仅是关于金属，更是关于构建国家的支柱。
The only way to do great work is to love what you do.
"The world is full of stories, but the stories are all one."
Engineering is about solving problems, not just making things look pretty.
Innovation is the key to sustainable development in the oil and gas industry. We must embrace new technologies to drive efficiency and environmental protection.