The current active safety system in the field has difficulty in getting a lower accidents rate due to the complex reason for the sudden accident.

目前，汽车安全领域的主动安全技术难以大幅度的降低交通事故，主要是因为事故发生原因的复杂性和突然性。

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The third section: This section anatomies profoundly complex reason of the moral belief maze from history, economy, culture and the absence of moral system itself.

第三部分：从历史、经济、文化角度以及道德信仰自身的理论缺失方面深刻剖析了道德信仰迷失的复杂原因。

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One reason Blade Runner was so interesting and complex was the very reason Alyssa enjoyed the above short: it turned the fear of the powerful robot Other on its head, and granted them their humanity and their frailty, and ours.

FORBES: Using Robots To Combat Prejudice

After all, if a federal judge might deem one of the shelters to be valid, then surely the creators of those controversial and complex devices had reason to believe, in good faith, that they had acted lawfully.

FORBES: Justice 'Deferred'

While Rodriguez rebounded from right hip surgery in March 2009 to help the Yankees to their first World Series title since 2000, Dr. Bryan Kelly said recovery from his operation on A-Rod's left hip this month will be more complex if for no other reason than it receives more stress because Rodriguez is a right-handed hitter.

WSJ: Latest A-Rod troubles have team frustrated