Sudoku is a popular combinatorial problem in recent five years, while it just begins to study it in China.

数独是近五年来国际上最热门的组合问题之一，国内研究才刚开始。

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Methods: Literatures on the compatibility principles on classic formulas in recent five years were summarized and analyzed.

方法：通过查阅近五年经方配伍规律研究的文献，并对其进行归纳、分析和总结。

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In recent five years, with studies on the history of ethic relations in Yunnan going further, a number of monographs and articles have been published.

近五年来，关于云南民族关系史的研究得以深入，发表了一批专著和专题论文。

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Medicaid spending has soared in recent times (up 63% in the past five years) thanks to rising health inflation, growing numbers of old people and the long-term decline in employer-provided health insurance.

ECONOMIST: Medicaid reform

Poor weather in recent years has seen the men's final take place on a Monday for the past five years, with some players having to play their semifinal and final on consecutive days.

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One in five public toilets had been closed in recent years because of the cost of bringing ageing facilities into line with the 1995 Disability Discrimination Act.

BBC: NEWS | UK | England | London | Lack of public loos ruins streets