Without any available cohort studies to test exposure over a long period of time, though, they have had to rely on lab studies, which failed to find any clear or reproducible biological effects.

没有任何可用的队列研究，以测试长时间暴露在电磁场中的后果，他们不得不依赖实验室研究，目前未找到任何明确或可复制的生物效应。

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Rhesus macaques, a mainstay of medical and psychological research, have long failed the mark test.

恒河猴，被用作医学和心理学研究的主题，一直未能通过标记测试。

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Last year, North Korea mounted a failed test of a long-range missile on April 13, just ahead of the country's most important holiday on April 15, commemorating the birth of the country's founder, Kim Il Sung.

WSJ: North Korea Presses Embassies on Exit

She's spent 250 days in five rehab facilities since January 2007, including one long court-ordered stint after a failed drug test.

CNN: SHARE THIS

Lohan has spent 250 days in five rehab facilities since January 2007, including one long court-ordered stint after a failed drug test.

CNN: 'April Fools,' Lohan says of pregnancy tweet