stringent assumption

例句：

1. 1.The teacher was very stringent with the students during the exam.
   老师在考试期间对学生们要求非常严格。
2. 2. The manager enforced strict rules to maintain order in the factory.
   经理执行严格的规则来维护工厂的秩序。
3. 3.The scientist conducted a rigorous experiment to test the theory.
   科学家进行了一个严格的实验来测试这个理论。