“合理化建议”常见的英文表达是 “rationalization proposal” 或 “suggestions for rationalization” 。
rationalization proposal：更侧重于正式的、书面的合理化改进方案或提议。例如：The company received a large number of rationalization proposals from employees to improve production efficiency.（公司收到了员工们为提高生产效率提出的许多合理化建议 。）
suggestions for rationalization：表达相对更宽泛一些，突出是围绕合理化方面给出的建议。例如：We welcome all suggestions for rationalization in our work process.（我们欢迎针对工作流程合理化提出的所有建议 。）