Since the usual test for protein in animal feed just measures the level of nitrogen, these chemicals can be added to far more expensive feed ingredients without anybody noticing.
因为一般的测定动物食物的测试只测量其中氮的含量，这些化学物质可以被加入昂贵的食物成分中而不为人所知。
Without these four ingredients skillfully integrated into your ad, chances are your ad will just "lie there" and not do anything but cost you money.
如果没有巧妙的将四个部分融入到你的广告中去，只会让你的广告静静的躺在一边而血本无归。
It is worth mentioning that the drink without the oxidation of tea fermentation, the effect is more obvious, it is because of these active ingredients in tea tea to retain more of the reason.
值得一提的是，饮用未经氧化、发酵的普洱茶，其效果更为明显，这是因为这类茶叶保留茶叶中活性成份较多的缘故。
It is worth mentioning that the drink without the oxidation of tea fermentation, the effect is more obvious, it is because of these active ingredients in tea tea to retain more of the reason.
值得一提的是，饮用未经氧化、发酵的普洱茶，其效果更为明显，这是因为这类茶叶保留茶叶中活性成份较多的缘故。
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