According to recent studies comparing the nutritional value of meat from wild animals and meat from domesticated animals, wild animals have less total fat than livestockfed on grainand more of a kind of fat thought to be good for cardiac health. 请问这句话，fed on grain充当什么成分？修饰的是livestock嘛？ 然后than后面省略了什么成分？为什么不补出have呢？than livestock fed on grain have？ 跪求NN指点，谢谢！
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发表于 2012-8-15 14:46:36
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