One reason is easy to collect the information, other is impact the implement of social security in latter period because of the society turbulence, production wreck, national power decline.

这样选定研究范围一是便于资料的收集，另外一个原因在于清代后期，社会动荡，生产破坏，国力衰弱，反而影响了社会保障的实施。

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Mongolia society went through a violent social turbulence and historical evolution from the end of the 16th century to the middle of the 18th century.

16世纪末到18世纪中叶，蒙古社会经历了剧烈的社会动荡和历史演变。

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However in the heart of my childhood years but have another delicate chemical element existence, that is me for the turbulence"confusion" of society more "precocious".

然而在我的儿时的内心却有着另一种微妙的元素存在，那就是我对于动荡“混乱”的社会比较“早熟”。

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The increasing disconnect between Saudi subjects and their rulers, growing stresses in Saudi society, and troubles inside the ruling family all point to turbulence ahead.

ECONOMIST: Saudi Arabia

This painfully ordinary drama, about the intertwined professional and private lives of officers in a Child Protection Unit in Paris, nonetheless reveals, in a time of political turbulence, some of the subtle peculiarities of French society.

NEWYORKER: Polisse