But when lead is found alone and not combined with another element, it is referred to as native lead.

但如果铅以单元素形式构成物质而不与其它元素结合，便可称此种矿物为自然铅。

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Square jaw is usually not combined with occlusive disorder. and the patient's purpose is to ameliorate their feature.

方颌畸形一般不存在咬合错乱，患者求治的主要目的是改善容貌，以求达到东方审美标准的椭圆形或“瓜子脸”。

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Yet, if the theory of teaching plan is not combined with every specific subject, its value of application will be restricted.

但是如果教学设计理论不和具体学科结合，其应用价值受到极大的限制。

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Even in 2009 at the world championships, Weibrecht did not finish in the downhill, super combined,and finished 39th in the super G.

VOA: standard.2010.02.09

Given the University of California's sprawling size, it is surprising that its nine campuses have not combined forces more, using the Internet as a bond.

ECONOMIST: Lessons of a virtual timetable

"We get high winds and we get big snowstorms, but they're not often combined, " Boyett said.

CNN: 'Truly a historic blizzard,' weather service says

"We get high winds and we get big snowstorms, but they're not often combined, " Boyett told CNN's iReport.

CNN: STORY HIGHLIGHTS