My novels tell healthy subject-matters, but I cannot prove every single line of them conveys positive message.
我的小说内容健康，但让我逐行说明每一句都是良好的信息，我也做不到。
2
Most college programs offer interesting courses to introduce you to new and fascinating subjectmatters.
多数大学都开设一些趣味性强的课程，用来向你介绍一些新的且引人入胜的主题。
3
These regulations address track, equipment, railroad operating rules and practices, qualification and certification of locomotive engineers, control of alcohol and drug use, and other subjectmatters.