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مشاهدة النسخة كاملة : Why do our veins look blue when our blood is red?

ahlam1399
01-20-2018, 12:40 PM
http://static-global-s-msn-com.akamaized.net/img-resizer/tenant/amp/entityid/AAuM1zZ.img?h=100&w=100&m=6&q=60&o=f&l=f

أكثر... (http://www.msn.com/en-in/health/wellness/why-do-our-veins-look-blue-when-our-blood-is-red/ar-AAuPTpC?li=AAgg4jn&srcref=rss)