But whether being merely overweight contributes to an early death as well has been uncertain and controversial.

但稍微超重是否会导致过早死亡仍具有不确定性及争议性。

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The effect of smoking and drinking on the prognosis of lymphomas has been uncertain, Dr. Renato Talamini, of the National Cancer Institute, Aviano, Italy, and colleagues note.

吸烟与饮酒对淋巴瘤预后的影响以前并不清楚。位于意大利阿维·亚诺国家癌症研究中心的Renato Talamini博士和同事们说。

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Osteoarthritis(OA) is a very common disease which always destroys articular cartilage and damages bone beneath cartilage, synovium and tissues around joint . It's pathogenesis has been uncertain .

膝关节骨性关节炎是一种常见的以膝关节软骨损害为主，病变累及软骨下骨、滑膜和关节周围组织为特征的一种慢性膝关节疾病，其病因病理仍未明确。

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General Myers acknowledges that process has been made more difficult by the uncertain outcome of the Afghan presidential election, and allegations of widespread fraud by supporters of President Hamid Karzai.

VOA: standard.2009.10.16

In reality, the future has always been uncertain, but the perception of uncertainty is what is greater today.

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Just how effective the boycott has been is uncertain.

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