近年来，虚拟现实成为热门技术。随着这个行业的快速发展，新的术语不断涌现：VR、AR、MR、XR等等，让人眼花缭乱。其实，这些概念很好理解。
What is extended reality technology?
by Bernard Marr
Imagine what it might be like to live and work in our world in 2030 and beyond. Perhaps, thanks to advancements in extended reality (XR), you might be able to shop for a new home anywhere in the world as if you were actually on-site.
imagine /ɪˈmædʒɪn/ v. 想象
advancement /ədˈvɑːnsmənt/ n. 发展、进步（由advance加后缀-ment变成名词）
extend /ɪkˈstend/ v. 扩展、扩充
reality /rɪˈæləti/ n. 现实（由real加后缀-ity变成名词）
on-site 在现场
XR is an emerging umbrella term for all the immersive technologies. The ones we already have today – augmented reality (AR), virtual reality (VR), and mixed reality (MR) plus those that are still to be created. All immersive technologies extend the reality we experience by either blending the virtual and "real" worlds or by creating a fully immersive experience.
emerging /ɪˈmɜːdʒɪŋ/ adj. 刚出现的、新兴的
umbrella /ʌmˈbrelə/ n. 伞（引申为包含多个组成部分的东西）
term /tɜːm/ n. 术语、词语
immersive /ɪˈmɜːsɪv/ adj. 沉浸式的
augment /ɔːɡˈment/ v. 增强
virtual /ˈvɜːtʃuəl/ adj. 虚拟的
be still to do something 某事可能在将来发生
blend /blend/ v. 混合、融合
In augmented reality, virtual information and objects are overlaid on the real world. This experience enhances the real world with digital details such as images, text, and animation（动画）. You can access the experience through AR glasses or via screens, tablets, and smartphones. This means users are not isolated from the real world and can still interact and see what's going on in front of them. The most well-known examples of AR are Snapchat filters that put digital objects such as hats or glasses onto your head.
object /ˈɒbdʒɪkt/ n. 物体、物品
overlay /ˌəʊvəˈleɪ/ v. 覆盖、放在…上面
enhance /ɪnˈhɑːns/ v. 增强、加强
image /ˈɪmɪdʒ/ n. 图片、图像
access /ˈækses/ v. 进入、使用
tablet /ˈtæblət/ n. 平板电脑
smartphone /ˈsmɑːtfəʊn/ n. 智能手机（由smart和phone组成）
isolate /ˈaɪsəleɪt/ v. 隔离、隔开
interact /ˌɪntəˈrækt/ v. 交互、互动
Snapchat /ˈsnæptʃæt/ 是一个在手机上分享照片、信息等的App
filter /ˈfɪltə(r)/ n. （编辑图片时用的）滤镜
In contrast to augmented reality, in a virtual reality experience, users are fully immersed in a simulated（模拟） digital environment. Individuals must put on a VR headset to get a 360-degree view of an artificial world that fools their brain into believing they are, e.g., walking on the moon or swimming under the ocean. The gaming and entertainment industries were early adopters of this technology; however, companies in other industries such as healthcare, construction, engineering, the military, and more are finding VR to be very useful.
in contrast /ˈkɒntrɑːst/ to 与…相比、与…相反
immerse /ɪˈmɜːs/ v. 沉浸
individual /ˌɪndɪˈvɪdʒuəl/ n. 个人、个体
headset /ˈhedset/ n. 头戴式耳机（VR headset指VR眼镜）
artificial /ˌɑːtɪˈfɪʃ(ə)l/ adj. 人造的
fool /fuːl/ v. 愚弄、欺骗
e.g. = for example
gaming /ˈɡeɪmɪŋ/ n. 电脑游戏
entertainment /ˌentəˈteɪnmənt/ n. 娱乐
adopter /əˈdɒptə(r)/ n. （新技术的）采用者（由adopt加上表示人的后缀-er）
healthcare /ˈhelθkeə(r)/ n. 健康照护、医疗卫生
construction /kənˈstrʌkʃ(ə)n/ n. 建筑业
engineering /ˌendʒɪˈnɪərɪŋ/ n. 工程
the military /ˈmɪlɪt(ə)ri/ 军队
In mixed reality, digital and real-world objects co-exist and can interact with one another in real-time. This is the latest immersive technology and is sometimes referred to as hybrid reality. It requires an MR headset and a lot more processing power than VR or AR. Companies are exploring ways they can put mixed reality to work to solve problems, support initiatives, and make their businesses better.
co- 前缀，意思是共同
real-time 实时的、即时的
refer to 提到、提及
hybrid /ˈhaɪbrɪd/ adj. 混血的、混合的
process /ˈprəʊses/ v. 处理（指计算机或芯片处理信息）
explore /ɪkˈsplɔː(r)/ v. 探索
initiative /ɪˈnɪʃətɪv/ n. 新计划、新方案
Those developing XR technologies are battling with some of the challenges to mainstream adoption. First, XR technologies collect and process huge amounts of very detailed and personal data, which has to be protected. In addition, the cost of implementing these technologies needs to come down.
battle /ˈbæt(ə)l/ v. 跟…做斗争
mainstream /ˈmeɪnstriːm/ adj. 主流的（由main和stream组成）
adoption /əˈdɒpʃ(ə)n/ n. 采用（由adopt加后缀-ion变成名词）
detailed /ˈdiːteɪld/ adj. 详细的
data /ˈdeɪtə/ n. 数据
in addition 此外、另外
implement /ˈɪmplɪment/ v. 实施、实现
It is essential that the wearable devices that allow a full XR experience are fashionable and comfortable as well as always connected, intelligent, and immersive. There are significant technical issues to solve, such as the display, power, motion tracking and connectivity（互连互通）.
essential /ɪˈsenʃ(ə)l/ adj. 必要的、重要的
wearable /ˈweərəb(ə)l/ adj. 可穿戴的（由wear加后缀-able变成形容词）
device /dɪˈvaɪs/ n. 设备、装置
fashionable /ˈfæʃ(ə)nəb(ə)l/ adj. 时髦的、时尚的
as well as = and also
connect /kəˈnekt/ v. 连接（指连网）
intelligent /ɪnˈtelɪdʒ(ə)nt/ adj. 智能的
significant /sɪɡˈnɪfɪk(ə)nt/ adj. 显著的
technical /ˈteknɪk(ə)l/ adj. 技术的、科技的
motion /ˈməʊʃ(ə)n/ n. 动作
track /træk/ v. 追踪
By 2022, the XR market is expected to reach $209 billion, which is eight times what it is today. This tremendous growth could mean the realities of our 2030 lives are beyond our imagination.
billion /ˈbɪljən/ n. 十亿
tremendous /trɪˈmendəs/ adj. 巨大的、极好的
growth /ɡrəʊθ/ n. 增长
imagination /ɪˌmædʒɪˈneɪʃ(ə)n/ n. 想象（由imagine加后缀-ation变成名词）
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