a powerful and secure backing的用法和样例：
- This is a power and not a right.
- Low self-esteem is a powerful and dangerous cauce of violence .
- PhotoStory 2005 is a powerful and handy software for Photographs.
photostory 2005年是一个功能强大和方便的软件拍照。It takes care about photos storage on your hard drive and you spend more time to describe photos and organize them.
- Jealousy can be a powerful and very destructive emotion.