英语语法分析

Those in one group were given the microbicidal gel.

他们给一组妇女使用的是杀菌凝胶。

Objective To study the microbicidal effect of hyperoxidation ion water.

目的研究强氧化离子水对微生物的杀灭效果。

Those in one group were given the microbicidal gel. Those in the other were given a placebo.

其中一组使用杀菌凝胶剂，而另外一组则使用普通安慰剂。