Alendronate-treated patients sustained less bone loss at the spine than those in the reference group, and both intervention groups sustained less bone loss at the hip than the reference group.

接受阿伦膦酸盐治疗病人的脊椎骨丢失程度持续低于参照组，两干预组的髋部骨丢失程度持续低于参照组。

In social psychological terms , these persons serve as your psychological reference group.

用社会心理学的话说, 这些人就是你的心理参照体.

In social psychological terms, these persons serve as your psychological reference group.

用社会心理学的话说，这些人就是你的心理参照体。

Grouping longer-term abstainers and recent quitters together as the reference group inflated the observed protective effect of alcohol, the authors note.

作者称，将长期禁酒组和最近戒酒组合并作为一个参照组后，所观察到的饮酒预防作用更大。