In this experiment, the challenge mites were exposed to a section of the leaf unexposed to initial treatment with mites.
在这个实验中，挑战螨暴露部分未曝光的叶螨的初步治疗。
For parents who want their children to grow up relatively unexposed to doubt, Darwin or indecent lunchroom chatter, home-schooling offers hope.
对于一部分父母来说，要让孩子在成长的过程中免受怀疑论、进化论的影响，远离乱糟糟的学校食堂里的下流话题，那么，他们的希望就寄托于家庭学校上了。
Methods: A total of 289 married male radar operators were included in the radar group and 148 married men unexposed to microwave radiation were enrolled as controls.
方法：研究组选择已婚雷达作业人员289例，对照组选择无电磁辐射影响的已婚官兵148例。
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