从nvsi.com链接出的网站列表
| No. | 链出域名 | 关键词 |
|---|---|---|
| 1. | k20learning.com | SofTutor Academic |
| 2. | 321learn.com | 321Learn.com |
| 3. | softutor.com | SofTutor.com |
| 4. | google.com | SofTutor Search |
| 5. | screencastwizard.com | |
| 6. | twitter.com | @FreeCADTraining |
| 7. | facebook.com | SofTutor |
| 8. | youtube.com | |
| 9. | linkedin.com | SofTutor |
| 10. | k-12kids.com | |
| 11. | softutorkids.com | SofTutorKids.com |
| 12. | code.org | code.org |
| 13. | 321help.com | 321 Help.com |
| 14. | rightstart4kids.org | |
| 15. | k-20learning.com | |
| 16. | statcounter.com | |