每个国家都在排污权交易这一欧盟的旗舰性计划上欣然签字，但法国和德国却给予其企业太多的污染排放许可，使得整个计划徒有虚名。

Everyone blithely signed on to the EU's flagship emissions-trading scheme. But France and Germany then gave their industries so many permits to pollute that they undermined the entire scheme.

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我们听到有太多空气污染，水污染，有毒食品的报道。

We heard about polluted air, polluted water, poisoned food.

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当谈到市区种植时，有个特别的问题，Wally说他种的农作物不能长得太高，否则它们会吸收太多的污染。

There are unique considerations when it comes to urban farming, Wally says: He can't grow crops that will get too tall, or else they will absorb too much pollution.

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