我认为：咬指甲仅仅是由于诸多因素引发的——由于随机变异——一些人形成坏习惯的结合。
Rather, I suggest, nail biting is just the result of a number of factors which - due to random variation - combine in some people to create a bad habit.
然而，在我国传统工业化道路中，由于诸多因素的限制，农村剩余劳动力转移陷入了重重困境。
However, on our tradition industrialize road, because of the restrict of many factors, the transference of village surplus labor force sink into the predicament.
然而由于诸多因素的影响，供应链的资源往往无法得到最合理的配置，从而限制了供应链的效率和竞争力。
However there exist too many X-factors preventing the efficient allocation of available resources, causing a low supply chain efficiency.
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