For pure benzene and other chemical products, the current is at a relatively high risk factor of time.

对于纯苯等化工产品，当前正处在一个风险系数相对较高的时期。

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Conclusions In the highway, the high risk factor for traffic accidents is pedestrian activities which should be effectively controlled.

结论高速公路上行人活动是高速公路交通事故的重要高危因素，应严格控制和减少高速公路内的各类行人活动。

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Corneal neovascularization (CNV) is one of the most causes of corneal blindness and the high-risk factor of corneal graft rejective reaction.

角膜新生血管是角膜盲的主要原因，亦是角膜移植排斥反应的高危因素。

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But a more recent study of 12, 000 American men and women found that high Lp-PLA2 levels were an independent heart-disease risk factor mainly in those patients with relatively low cholesterol levels.

FORBES: Attacking Heart Attacks

This instrument monitors high-energy radiation considered to be a health risk to astronauts and a factor in whether microbes could survive on Mars' surface.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans

At least 21 London tower blocks rated as a high fire risk by local councils were not visited by firefighters last year - despite flawed visits being a factor in the fatal Lakanal House fire.

BBC: No fire checks for tower blocks despite Lakanal fire