By the time the issue came to light, "best" practices had been established based on an underlying assumption that the outcome of failed transactions would be immediately and reliably detectable.

到问题变得众人所知的时候，基于“失败事务的结果能够立即和可靠地检测到”的假设，“最佳”实践已经建立起来了。

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For many years researchers have been trying to develop a synthetic material with the same light-scattering properties as an opal, by etching patterns into various materials. That approach has failed.

多年来研究者们一直致力于开发一种与猫眼石一样有散射特性的合成材料，他们在各种各样的材料中蚀刻图案，但是都无功而返。

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Russia's new nuclear-capable missile suffered another failed test launch, the defense ministry said Thursday, solving the mystery of a spectacular plume of white light that appeared over Norway.

星期四俄罗斯国防部称，俄新型核导弹再一次试射失败，揭开了出现在挪威上空的神秘羽毛状白光之谜。

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Raikkonen, who had entered the pits in third place, and Kubica stopped side by side at the red light, but Hamilton failed to notice in time that they had stopped, and he ploughed into the back of the Ferrari.

BBC: Kubica wins after Hamilton error

"If the goal of employing red-light camera systems is to improve driver safety, the data suggest that the program has failed, " New Jersey state Sen.

WSJ: Jenkins: The Answer Is a Longer Yellow

At a news conference Thursday, police said Auvinen had sprayed a flammable liquid, possibly lamp oil, on the walls of the school and that he tried but failed to light it.

CNN: Finland in mourning after fatal school shooting