Graduate students have used a 3D printer to make a limb for a six-year-old boy born without a right arm.

一名6岁的男孩天生就没有右臂，一群研究生用3D打印机为他打印了手臂。

Alex Pring, from Groveland, Florida, was given the new prosthetic arm on Friday by a team headed by University of Central Florida student Albert Manero.

男孩名叫Alex Pring，住在佛罗里达州格罗夫兰市。一个由中佛罗里达大学学生Albert Manero领导的小组为他制造了这个义肢。

The limb took seven weeks for the team to build in their free time and cost $350 - compared to the $40,000 that doctors told Alex's family a prosthetic arm would cost. After the little boy put on the arm, which senses muscles in his shoulder and opens and closes, he grinned and gave his mother a hug - the first time he had been able to put two arms around her.

这个小组花了7周的业余时间和350美元就制造了这个义肢，而医生告诉Alex的家庭，一个义肢的价格是4万美元。Alex的义肢可以通过Alex肩部肌肉来控制。当他装上义肢后，他笑着给了妈妈一个拥抱——这可是他平生第一次能够用双臂拥抱妈妈。

'I feel good,' Alex told reporters. 'I feel everything good, even my robot arm. It's not even heavy.'

Alex告诉记者：“我感觉很好。我觉得一切都好，包括我的机器手臂。它一点都不沉。”

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