It is no easy task to identify the reasons for this phenomenon which involves several complicated factors.

要找出这一现象的原因并非易事，因为它涉及若干复杂的因素。

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More than 90 nations take part in the program, which involves intelligence sharing and naval coordination to prevent nuclear and other illegal weapons from being transported.

VOA: standard.2009.05.26

Another example is some weird studies done in a discipline of social psychology known as terror management which involves subliminal death primes.

另一个例子是在社会心理学中进行的,关于恐惧管理的一些古怪的研究,恐惧管理涉及到了,阈下死亡意念的促发。

耶鲁公开课 - 心理学导论课程节选

which is a knockout tournament which involves all professional clubs

这个是淘汰制的联赛，所有职业俱乐部都会参加。

关于足球联赛 - SpeakingMax英语口语达人

This particular decision adopted the IRS method, which involves preparing two pro-forma separate returns.

FORBES: 5 Neglected Tax Developments of 2011

Novell developers were stuck writing applications as NLMs, which involves working in a complex programming environment.

CNN: New NetWare embraces Web apps

His 60-year-old strategy, which involves 40 principles for solving engineering problems, is enjoying an unlikely renaissance.

FORBES: Magazine Article