Studies have shown that dogs 'noses can detect scents as faint as 500 parts per trillion, making it possible that dogs sense a seizure-indicating pheromone3 prior to an attack.

研究表明，狗鼻子能嗅出微弱到兆分之五百程度的味道，所以它能闻出显示癫痫即将发作的信息素。

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The second faint weakness in Ms Lamont's approach is that her attack line re the constitution resembles, to some extent, the type of arguments which the Tories used to adduce against Labour proposals for devolution.

BBC: First minister's questions