The doctrine of no punishment for doubtful case of crime not only applies to the trial stage, but also the investigation stage and prosecution stage, but the validity is different.

疑罪从无原则不仅适用于审判阶段，也适用于侦查和起诉阶段，但效力不同。

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The new Course Standard of Physical Education and Health almost went through the trial stage and would move into implementation stage.

新的《体育与健康课程标准》就要完成实验，进入实施阶段。

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This latest deal suggests Twitter has moved beyond the trial stage for advertisers.

BBC: Twitter secures advertising deal with SMG

The 31-year-old Garmin rider snatched the pink jersey from Spain's Joaquim Rodriguez on the final time trial stage in Milan, forging a winning margin of just 16 seconds after 21 stages.

CNN: STORY HIGHLIGHTS

Most mobile-health projects are still at the trial stage, but a report compiled in 2008 by the UN Foundation and the Vodafone Foundation documented around 50 such projects across the developing world.

ECONOMIST: Beyond voice