The serum PRL levels were assayed by RIA in 34 young firemen before and after a strenuous exercise.

用双抗体放射免疫法测定34名年轻消防队员剧烈运动前后血清催乳素（PRL）水平。

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After a strenuous "autumn of decisions", such as ending military conscription and extending a deadline for phasing out nuclear power, Germany plans to take it easier in 2011.

在经历了艰辛的“决策之秋”(例如终结征兵制、推迟逐步废止核能的最终期限等决策)后，德国打算在2011年放松一些。

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After strenuous talks, a cease-fire agreement was brought to pass, and in return it brought about 10 years of peaceful co-existence between the two countries.

在紧张的谈判以后达成了一项停火协定，这给两国带来了10年和平共处的局面。

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While it's widely accepted that people should avoid strenuous physical and mental activities after a concussion, it's less clear whether flying should be avoided soon afterwards.

CNN: Is it OK to fly after a head injury?