琼斯夫妇住在康瓦耳郡的特鲁罗，他们承认自己的饮食结构和生活方式是肥胖症的病因。

Mr and Mrs Jones, who live near Truro in Cornwall, admit their diet and lifestyle led to their weight gain.

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但直到19世纪数学家们才发现隐藏在数学方程解法中的对称性，其中包括郁郁寡欢的法国数学天才艾瓦里斯特·伽罗瓦。

But it was not until the 19th century that mathematicians such as Evariste Galois, an unhappy French genius, discovered symmetries hidden in the solutions to mathematical equations.

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达特茅斯大学的经济学教授大卫·布兰·法罗以及奥斯瓦德先生研究了72个国家的数据。

David Blanchflower, professor of economics at Dartmouth College, and Mr Oswald looked at the figures for 72 countries.

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