rules for classification and construction of ships

例句：

1. 1. The company has strict rules for employees to follow during work hours.
   该公司对员工在工作时间内的行为有严格的规定。
2. 2. The school has established clear rules for students to follow during exams.
   学校为学生在考试期间制定了明确的规则。
3. 3. The government has introduced new rules to regulate the traffic on the highway.
   政府已经引入新的规则来管制高速公路上的交通。