Transcript:
A fully functional gun made with a 3D printer.
The controversial group who designed the firearm want to make it available online.
Anti-gun campaigners have criticised the project; while law enforcement agencies are monitoring developments.
3D printing has been hailed as the future of manufacturing, and works by building up layer upon layer of material to make solid objects.
Vocabulary:
fully functional 充分發(fā)揮功能
firearm n. 火器;槍炮
anti-gun campaigners 槍支活動(dòng)參與者
law enforcement agencies 執(zhí)法部門(mén)
hailed as 被譽(yù)為