【英语时差8,16】回收塑料

Recycling Plastics When plastic containers are recycled, they are first cleaned, then ground into tiny pellets and put into a flotation tank. This separates out the various plastic resins¹ from other waste material. Once they are separated out, the plastic resins are ready for reuse. They are melted down, then molded into new plastic products. Plastics are made mostly of polymers, large molecules² of carbon and hydrogen and oxygen. These polymers can be mixed with a number of other ingredients, including stabilizers, fillers, and coloring agents. This makes for a wide variety of types of plastic, having many different useful properties. Unfortunately, this variety also makes plastic one of the most difficult things to recycle. The biggest problem for plastic recyclers is that plastics come in many different types, and it’s impossible to tell some of these apart just by looking at them. For example, two liter soda³ bottles are made of a plastic called polyethylene terephthalate, or P.E.T.. Another type of plastic, polyvinyl chloride, can look just like P.E.T., but if a small amount of it is present with the soda bottles you are recycling, it can ruin the entire batch⁴. To help prevent this problem, manufacturers stamp all plastic products with a recycling code number. Plastics are grouped into seven categories. P.E.T. plastic is number one, while polyvinyl chloride is number three. Milk jugs⁵ and plastic grocery bags are both number two. It’s important to separate your plastics very carefully before you recycle them. And remember: carrying your bottles to a recycling center is just the first step. It’s just as important to BUY items made from recycled material as it is to recycle them.

1 resins   

n.树脂，松香( resin的名词复数 )；合成树脂v.树脂，松香( resin的第三人称单数 )；合成树脂

参考例句：

• The resins were used to turn out millions of helmet liners. 用这类树脂生产了成百万只钢盔内衬。 来自辞典例句
• Cheapness is one of the main attractions of polyester resins. 廉价是聚酯树脂受到欢迎的主要原因之一。 来自辞典例句

2 molecules   

分子( molecule的名词复数 )

参考例句：

• The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
• Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。

3 soda   

n.苏打水；汽水

参考例句：

• She doesn't enjoy drinking chocolate soda.她不喜欢喝巧克力汽水。
• I will freshen your drink with more soda and ice cubes.我给你的饮料重加一些苏打水和冰块。

4 batch   

n.一批(组，群)；一批生产量

参考例句：

• The first batch of cakes was burnt.第一炉蛋糕烤焦了。
• I have a batch of letters to answer.我有一批信要回复。

5 jugs   

（有柄及小口的）水壶( jug的名词复数 )

参考例句：

• Two china jugs held steaming gravy. 两个瓷罐子装着热气腾腾的肉卤。
• Jugs-Big wall lingo for Jumars or any other type of ascenders. 大岩壁术语，祝玛式上升器或其它种类的上升器。