criterion of realism

例句：

1. 1. Theteacher set a high standard for the studentsto achieve.
   老师为学生设定了高标准。
2. 2.The new policy is based on strictercriteria for environmental protection.
   新政策基于更严格的环境保护标准。
3. 3. The company has set itsown quality standards for all products.
   公司已为其所有产品设定了质量标准。