“正常业务”常见的英文表达是 “normal business operations” 或 “regular business activities”。
“normal business operations” 强调业务在常规、正常的状态下运行，例如：Despite the challenges, the company has managed to maintain normal business operations.（尽管面临挑战，公司还是设法维持了正常业务运营。）
“regular business activities” 侧重于指日常的、常规的业务活动，例如：Our regular business activities include sales, marketing, and customer service.（我们的常规业务活动包括销售、营销和客户服务 。 ）