而部分原因要归结为——遗传：有30种不同的基因可增高克罗恩病的易感性，但也并非每一个拥有这种基因的人就会得克罗恩病。

And heredity is partly to blame: some 30 different genes enhance susceptibility. But not everyone who has the genes gets Crohn's.

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虽然克罗恩病比乳糜泻少见，但是克罗恩病有更严重的症状，因为它可以影响整个消化道。

Crohn's disease is much less common but can be accompanied by more severe symptoms as it can affect the whole gastrointestinal tract.

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“就剩下你和我了，罗恩！”唐克斯愉快地说，她朝罗恩一挥手，打翻了一个杯子架。

"Which leaves you and me, Ron! " said Tonks brightly, knocking over a mug tree as she waved at him.

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