greenhouse gas emissions 温室气体排放

　　What would a world without plastic look like? Earlier this year, Austria-based environmental consultancy Denkstatt imagined such a world, where farmers, retailers and consumers use wood, tins, glass bottles and jars, and cardboard to cover their goods. It found the mass of packaging would increase by 3.6 times, it would take more than double the energy to make and the greenhouse gases generated would be 2.7 times higher.

　　the mass of 大多数

　　To understand this, consider the properties of plastic that make it so attractive: it is durable, flexible, it does not shatter, it can breathe and it is extremely lightweight. As a result, food and drink are protected from damage and kept for lengths of time previously unimaginable.

　　The European Packaging and Films Association says average spoilage of food between harvest and table is 3% in the developed world, compared with 50% in developing countries, where plastic pallets, crates, trays, film and bags are not so widespread. Once the food reaches peoples homes, its lifespan is also increased for a shrinkwrapped cucumber, from two to 14 days.

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