⑮add to使增强，使增加，使扩大

　　add up to 总共是，总计为

　　⑯that give out smells是that引导的定语从句，修饰small openings。

　　⑰be connected to 与......相连接

　　be connected with 与......有关

　　⑱network/'netwɜːk/n.(互联)网络

　　⑲studio/'stjuːdIəʊ/n.(广播、电视)演播室，制作室；工作室

　　a television studio 电视演播室

　　[第3段译文]

　　RealCine的工作原理是让使用者觉得自己身处真实的新世界中--一个只在电脑程序中存在的世界。为了达到这种效果，需要设计专门的VR耳机，这种耳机可以让使用者欣赏到三维世界，听到环绕在他们身边的声响。VR耳机的移动方向就表明使用者想移动的方向。使用者还要戴上专门的手套，这样，他或她就可以"触摸"看到的人和物体了。给RealCine虚拟世界锦上添花的是，耳机上甚至还有一些小孔，可以释放出与环境相匹配的气味。VR耳机和手套均与演播室里的RealCine电脑系统相连接。

　　In scientific studies it has been shown that VR can be a good treatment for people who have social⑳ problems.In one case\s\up1(21(21)， a teenager who was afraid of talking and playing with his schoolmates was treated with VR. In the world created by RealCine\s\up1(22(22)， he became the captain of the Brazilian\s\up1(23(23) football team and scored the winning\s\up1(24(24) goal in a World Cup final. This encouraged him to become more confident\s\up1(25(25) around others.

　　An argument has been put forward\s\up1(26(26) that some users will be disappointed by RealCine because VR is not real\s\up1(27(27). However, with VR we are able to do things that could never be achieved in real life. For example, with the aid of\s\up1(28(28) RealCine, a seventy­year­old grandfather recently took a trip to Africa. In reality, he is disabled\s\up1(29(29) and can no longer walk, but he was able to see and touch a lion while still in the convenience of the VR studio\s\up1(30(30).

　　⑳social/səʊʃl/adj.社交的，交际的；社会的

　　\s\up1(21(21)in one case在一个案例中

　　\s\up1(22(22)过去分词短语作后置定语，修饰world。

　　\s\up1(23(23)Brazilian/brə'zIlIən/adj.巴西的 n．巴西人

　　\s\up1(24(24)winning/'wInIŋ/adj.制胜的，获胜的

　　\s\up1(25(25)confident/'kɒnfIdənt/adj.自信的；肯定的，有把握的

　　be confident about对......感到自信

　　\s\up1(26(26)put forward提出，提议

\s\up1(27(27)disappointed/ˌdIsə'pɔIntId/adj.失望的，沮丧的