前后的

To move forwards and backwards as it is compressed and decompressed.

地面在被压缩解压的作用下被迫前后移动。

She won an Oscar for Bast Actress for her role in the film Roman Holiday.

这句句子中，前后两个for的用法有区别么？

MAIN OUTCOME MEASURES: Changes in physiological and biochemical indicators before and after the competition.

主要观察指标：比赛前后生理指标和生化指标的变化。

Based on the analysis of core samples from the hole of Zk23 in the East China Sea Continental Shelf and by means of sedimentary stratigraphy, biostratigraphy and chronostratigraphy, thes consider that the fine-sand deposition in borehole was part of buried ancient estuary sand ridges of the Yangtze River.

根据东海陆架 Zk23孔岩心分析资料，进行了沉积地层学、生物地层学和年代地层学分析，确定了该钻孔中段细砂层为埋藏古长江河口沙脊沉积，阐明了该孔附近海区冰消期前后和冰后期的沉积历史。

Red blood cell immunity and lymphocyte blastogenesis were determined,mean survival time of cardiac allografts and its microscopic examination were observed.

观察4组手术前后红细胞免疫指标的动态变化，供者心脏移植后存活时间，淋巴细胞增殖反应，供者心脏超微结构等变化。

Before and after 1 month's treatment,sICAM 1 in serum and blood lipids were measured.

监测治疗前后血清 sICAM 1和血浆血脂水平的变化。

Objective To evaluate the changes of soluble tumor necrosis factor receptor in blood serum in thepatients of thoracic tumor.

目的研究胸部肿瘤患者手术前后STNFRI在血清中的变化。

Eight-six cases of chronic headache were divided into treatment group treated by acupuncture and bloodletting and control group treated with western medicine.

86例慢性头痛患者，分为针刺配合放血治疗组和西药对照组，观察治疗前后两组的疗效。

In the bowers no companion is mine .

当然，这里还有前后两个译者的水平差异。

Results:The two group's clinical symptom, ankle/brachia index, blood-fat index,fibrinogen,endothelial cell function were obviosly improved.

观察两组患者治疗前后临床症状、踝/肱指数、血脂、纤维蛋白原、血管内皮功能等指标的变化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。