black technology 黑科技
technology可以直接缩写成 tech，所以黑科技也可以说成是 black tech

Dyson Airwrap 戴森卷发棒
Yes, so it means that the technology is new, exciting and impresses people.
这里的黑科技，意思是指这个科技很新，很吸引人。

3-D printers 3D打印机

VR = virtual reality 虚拟现实
It's so lifelike.
VR真的很逼真！
VR is a technology that is only going to get better! So be on the lookout.
VR科技只会变得越来越好，所以大家可以持续留意。

Amazon Echo or Google's Alexa 智能管家

AI = artificial intelligence 人工智能
personal assistants 私人管家
Yeah! They are a great example of AI in our homes - Artificial intelligence.
这些就是典型的家居人工智能！

AR = augmented reality 增强现实技术
AR技术可广泛应用到军事、医疗、建筑、教育、工程、影视、娱乐等领域。