Tobacco use, indoor and outdoor air pollution and occupational dusts and chemicals are the primary risk factors.

烟草使用、室内外空气污染与职业灰尘和化学品是主要的高危因素。

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In my experience, there is a primary risk that drives project managers to consider overlapping iterations: the resource utilization risk.

在我的经历中，遇到过一个主要的驱使项目经理考虑重叠迭代的风险：资源利用风险。

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Tobacco use and the burning of solid fuels for indoor heating and cooking are the primary risk factors for chronic obstructive pulmonary disease (COPD) – a lung ailment – in women.

慢性阻塞性肺病：烟草使用以及用于室内取暖和做饭的固体燃料燃烧是使妇女罹患慢性阻塞性肺病（一种肺部疾病）的主要风险因素。

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Of course, the primary risk is that you could lose your entire investment in the strangle.

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The primary risk for Apple (and Apple investors) is that the company becomes complacent and assumes customer loyalty.

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Unlike credit-oriented benchmarks, the primary risk in government securities is interest rates.

FORBES: With Bond Yields So Low, Why Should You Pay More For Active Management?