subject-matter of contract

例句：

1. 1. Theteacher asked the students to write a report on the subject of environmental protection.
   老师要求学生们就环境保护这一主题写一篇报告。
2. 2.The meeting was about discussing the matter of allocating resources for the upcoming project.
   会议讨论的是分配资源给即将到来的项目的问题。
3. 3.The scientist focused on the subject matter of genetic engineering.
   科学家专注于遗传工程的主题。