Ff you come to Guilin, you will know how clear the water is and how green the hills are.
如果你来桂林，你将会知道那的水是多么的清，山是多么的绿。
There still aren't many simple options for consumers to find impartial data on how green a product is.
消费者要想找到对产品是否够环保作公正评估的标准并不容易。
There are doubts about how green ethanol really is (some say the production process uses almost as much energy as it produces).
原因有好几个：一些人怀疑生物燃料到底是不是所谓的绿色能源，有人说生产过程中耗费的能源就已经跟这些产品燃料能产生的能量差不多了。
As the photographer commented, look at how green the grass is in some pictures (see those below) : it is evidence of exposure to excess nitrogen.
正如摄影师所说，看看下图中的草长得如此之绿，不正是接触过多氮元素的证据吗？
If you come to Guilin, you will know how clear the water is and how green the hills are.
如果你来到桂林，你将知道那里的水是多么的清，那里的山是多么的绿。
You will be surprised at how green London is.
看到伦敦那么绿你会大吃一惊的。
How green is your organic lettuce?
你的有机生菜有多绿呢？
Synthetic Turf Debate: How Green Is Your Grass?
人造草坪的争论：你的草坪有多绿？
Synthetic Turf Debate: How Green Is Your Grass?
人造草坪的争论：你的草坪有多绿？
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