Sometimes a phase iv (post-approval) trial is also pursued, where the long-term effects of the drug are monitored on those receiving prescriptions.

有时还有第四阶段，这期间药物的长期效果在接受药物的病人中被监测。

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Some parts of the Open Platform have yet to be finalised, and the network was described as a "beta trial", a programming term for software ready for testing but not ready for final release.

开放式平台的某些部分尚未完成，而且该网络被描述为“测试版试用”，这是一个编程用词，表示软件可供测试，但并还未准备好最终版予以正式公布。

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A recent review of the Selenium and Vitamin E Cancer Prevention Trial showed long-term, regular use of Vitamin E supplements increase the risk of prostate cancer in healthy men.

最近，一项针对硒和维生素E抗癌试验的报告显示，长期规律服用维生素E补充剂会增加健康男性患前列腺癌的风险。

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It may take a long-term game of trial and error.

CNN: Why new laws could miss America's bigger gun problem

In a long-term extension trial one-quarter of mipomersen-treated patients had an average liver fat fraction greater than 20%.

FORBES: FDA Review Raises Safety Concerns About Mipomersen

Chinese law generally requires trials to be public, and the official report of the proceedings ritualistically invoked the term "public trial" to describe the proceedings.

CNN: China murder trial a rigged spectacle