在污染物产生处设置局部排风；

Install local exhaust ventilatio facilities at the pollutant sources;

youdao

或者设置局部变量然后使用xsl： for - each来为内部计算改变视点。

Alternately, you set the local variable and used XSL: for-each to change the point of view for an inner calculation.

youdao

除了按照发明者所计划的方式来使用该语言之外，这样做可避免复制和重新设置局部变量。

This avoids the copying and resetting of the local variables in addition to using the language in the way as it was intended by its inventors.

youdao