Although the young scavengers' digestive systems might be well adapted to digesting bone fragments, they are not suited to handling plastic, metal and glass.

尽管这些幼小食腐动物的消化系统也许足以消化碎骨头，但它们的胃对于塑料、金属物与玻璃是肯定束手无策的。

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Arranged in barrels of concrete or plastic, these biosand water filtration systems (BSFs) remove 95 to 99 percent of the bacteria, viruses, worms and particles contained in rain or surface water.

通过混凝土桶和塑料桶的处理，生物沙子饮用水过滤系统可以净化95％到99％的细菌、病毒、蠕虫、雨水或者地表水污染颗粒。

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Operated by Norcal Waste Systems, it processes an average of 750 tons of paper, plastic, glass and metals a day.

工厂按照诺克尔废品管理局(Norcal Waste Systems)废料回收系统运作，平均每天能够处理总共750吨的纸质品、塑料制品、玻璃制品与金属制品的废料。

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That creates all sorts of social consequences that we'll talk about sustainability, with shipping water long distances, all the plastic involved, people's distrust of public water systems that's unfounded, and things like that are very interesting and have big public health consequences.

这就产生了很多社会问题,比如我们将要谈到的饮水污染问题,饮用水在长途运输的过程中,会受到各种塑料污染,还有人们对公用自来水系统,毫无理由地不信任,类似这些现象都很有趣,而且会导致重大的公共健康后果

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Organic-based (plastic) systems are less so, degrading much more quickly.

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There are various systems for DIY constructions with most requiring a compost-based system, he says, but homemade hydroponic systems can be made using plastic bottles.

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Rather impressively, just like its little brother, the CubeX relies on cartridges instead of spools for dispensing plastic -- either ABS or PLA. 3D Systems even calls them "smart cartridges" since it can distinguish between the two plastics and adjust the properties accordingly.

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