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1·There are currently 50 members in the chorus who apply voluntarily and are recruited through selective trials from the employees of the group headquarters and its subordinate companies.

合唱团现有团员50人，团员主要来自集团本部及各下属企业的正式职工，通过自愿报名和基础选拔考核方式招收。

2·Large trials of selective serotonin reuptake inhibitors are being carried out in order to assess their effectiveness in reducing the above symptoms.

进行血液中特定复合胺再摄取抑制剂的大量实验从而评估对以上症状的减轻是否有效。

3·Vardenafil, as a novel and highly selective phosphodiesterase 5 inhibitor, has been proved by many clinical trials to be quite safe for the cardiovascular system.

伐地那非是一种新型高选择性磷酸二酯酶5型抑制剂，它对心血管系统的安全性已被多项临床试验所证实。

4·Most of the previous trials include no more than 4% of the population. So, it was difficult to generalize the result to the whole population because it was highly selective.

之前的绝大部分研究入组的患者不超过4%，由于这种高度选择性限制了试验结果的适用范围。

5·Overall, we assessed trials as having high or unclear risk of bias owing to incomplete or missing data and selective outcome reporting.

大致上来说，由于数据不完整或欠缺，我们判定这些试验有高度或不明的偏差风险。

6·There is a high risk of bias for the adequacy of allocation concealment and presence of selective outcome reporting amongst the trials.

这些试验所回报的分组隐匿及筛选结果的表现有很高风险偏差。