非淀粉多糖酶有助于健全动物的消化系统，提高玉米豆粕日粮的消化率。
The non-starch polysaccharide enzymes help the animal's digestive system to make the corn-soybean ration more digestible.
尽管这些幼小食腐动物的消化系统也许足以消化碎骨头，但它们的胃对于塑料、金属物与玻璃是肯定束手无策的。
Although the young scavengers' digestive systems might be well adapted to digesting bone fragments, they are not suited to handling plastic, metal and glass.
这一点显然从动物骨头上的切痕，人的独特的消化系统，以及更大的大脑可以看出来。
That's clear from cut marks on animal bones, and our unique digestive system and our bigger brain.
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