Occurance: Studies report that 15% of ankle injuries result in fracture.

发生率：研究表明15%的踝关节损伤导致骨折。

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The way to prevent the occurance from penetrating gas hole was analyzed.

并对防止侵入性气孔产生的途径进行了分析。

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The measurement of the zero charge points and isoelectric points shows occurance of the characteristic absorption.

零电荷点和等电点的测量结果表明发生了特性吸附。

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Unfortunately, these latter disorders are problems that patients can act to increase the probability of occurance.

FORBES: Who Causes Half of Healthcare Costs?

Overnight, fires burned through the interiors of luxury cars in Berlin, a more frequent occurance after the massive riots in London highlighted a widespread unease across Europe.

FORBES: European Markets Slump On Uncertain Tone

Marine biologists say the most likely cause of the unusual occurance is red algae and the recent warm spell - although mass suicide has not been ruled as a cause.

BBC: News | Wales | Sea urchins may have committed suicide