There are four causes by and large.
其中大体上包括四个方面的原因。
These four causes do not operate singly.
这四个原因并不单个起作用。
People suggested four possible causes.
人们提出了四个可能的原因。
The foreboding has two general sources and four specific causes.
这种对未来不详得预感有两个普遍的来源和四项具体的原因。
There are four main causes of alcohol related death.
酒精是引起四种死亡的主要原因。
All the causes now mentioned fall under four senses which are the most obvious.
现在，所叙诸原因，很明显地，归于四类。
These are our most common in the lives of four insomnia causes.
以上是我们在生活中最常见的四种失眠症病因。
These are our most common in the lives of four insomnia causes.
以上是我们在生活中最常见的四种失眠症病因。
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