态学原理来处理废弃物。一台巨型机器，能把所有可获得的废弃物都吞进去，而且总是贪得无厌。垃圾被转化成几种有用的材料，如用于耕地的"肥料"和用于沙漠的"土壤"。什么都不浪费，所有的东西，哪怕是塑料袋也被循环利用了。绝妙的创意，不是吗？

　　我注视着这台转动的垃圾分解机器模型，被它的高效所吸引。但是，我们又开始向前移动了。

　　G：Our third stop shows the changes that have happened to work practices\s\up1(32(32). Manufacturing\s\up1(33(33) no longer takes place on the earth but on space stations like this one.A group of engineers programme\s\up1(34(34) robots to perform\s\up1(35(35) tasks in space.The robots produce goods\s\up1(36(36) such as drugs, clothes, furniture, hovering carriages, etc\s\up1(37(37). There is no waste, no pollution and no environmental damage！However, the companies have to train their representatives\s\up1(38(38) to live and work in space settlements\s\up1(39(39). They have to monitor\s\up1(40(40) the robots and the production.When the goods are ready they're transported by industrial spaceship back to earth.

　　My mind began to wander\s\up1(41(41). What job would I do？My motivation\s\up1(42(42) increased as I thought of the wonderful world of the future\s\up1(43(43).

　　\s\up1(32(32)that至句末为定语从句，修饰the changes。

　　\s\up1(33(33)manufacture [ˌmænjʊ'fæktʃə] vt.(用机器)大量生产；成批制造，此处为动名词作主语。

　　\s\up1(34(34)programme vt.(计算机)编程；设计；安排 n．程序

　　\s\up1(35(35)perform vt.执行；上演

　　\s\up1(36(36)goods [ɡʊdz] n．货物，仅有复数形式，不可用数词直接修饰。

　　\s\up1(37(37)etc [It'setərə] abbr.诸如此类；等等，etcetera的缩写形式。

　　\s\up1(38(38)representative [ˌreprI'zentətIv] n．代表；典型人物 adj.典型的；有代表性的

　　\s\up1(39(39)settlement ['setlmənt] n．定居；解决

　　\s\up1(40(40)monitor vt.监管 n．显示器；班长

　　\s\up1(41(41)wander v．游；走神；徘徊

　　\s\up1(42(42)motivation [ˌməʊtI'veIʃn] n．动机

　　\s\up1(43(43)as I thought of the wonderful world of ...为as引导的时间状语从句。

　　 [第6～7段译文]

导游：第三站要展示给我们的是发生在生产实践中的一些变化。批量生产不再在地球