虽然一些头条报道将此发现吹捧为从牛乳中获取人类奶水的方式，这种转基因奶更大意义上还是牛奶，而非人奶。

And while some headlines have touted the discovery as a way to get human breast milk out of the udders of dairy cows, this kind of transgenic milk is still far more cow-like than human-like.

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这样做有充分的理由：tagname可能包含其它嵌入的xml元素，在这种情况下获取其文本值没有多大意义。

There is good reason for this: tagname may contain other embedded XML elements, in which case getting its text value makes less sense.

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阅读杂志长篇文章和商业报告时，预习对于获取其大意非常有用。

Previewing is especially useful for getting a general idea of heavy reading like long magazine articles and business reports.

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