Recently, piracy happened frequently and took on a rising tendency.

近几年来，海盗犯罪案件频繁发生，而且有逐年上升的趋势。

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Because of adverse environment, operating mechanism failure happened frequently.

由于其作业环境恶劣，工作机构极易发生故障。

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Such cathartic moments happened frequently during Insight training sessions, according to Allen.

按艾伦的说法，这种个人宣泄式的场面经常出现在真知的培训课上。

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If this happened frequently enough, instead of just a little science fiction story like with the David Smith case, maybe we'd say,yeah,possession is one of these things that needs to be explained.

如果这种事情频繁发生，而不是像David，Smith案例般的科幻故事，也许我们就会说，没错，夺舍是一个亟待解释的事态。

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First, it has happened more frequently than we thought.

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This type of humor has happened all too frequently in his 20-year career.

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Ever scrambling to piece together an income, Antheil wrote frequently for Esquire magazine including articles on endocrinology, particularly female hormones, that happened to catch Lamarr's attention.

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