You can use XSL: copy-of to copy the whole IDN tree to the output, as before, but you can also use the variable in a path expression without a node-set conversion.

与以前一样，可以使用xsl： copy - of将整个idn树复制到输出，但是也可在路径表达式中使用该变量而不需要转换成节点集。

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They found changes in gene expression that help explain how effective treatment leads to conversion of aggressor into protector cells.

研究者发现，基因表达的改变能帮助解释有效治疗能使攻击性细胞转化为保护性细胞。

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The combination of this kind of nouns with degree words makes up the vacant problem of adjectives semantic expression and results in the conversion of some nouns to both nouns and adjectives.

这类名词与程度词的组合弥补了形容词语义表达上的缺失问题，并由此引发了部分名词向名形兼类词的转变。

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