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1·The causes are many and may interconnect.

原因很多，而且还可能互相关联。《柯林斯英汉双解大词典》

2·This book contains observations about the causes of addictions.

这本书包含关于上瘾原因的观察结果。《柯林斯英汉双解大词典》

3·Recent research has thrown new light on the causes of the disease.

最近的研究可以使人进一步了解导致这种疾病的原因。《牛津词典》

4·In crude terms , the causes of mental illness seem to be of three main kinds.

简略地说，导致精神病的原因看起来主要有三种。《牛津词典》

5·All the causes of alcoholism are not discovered yet.

但目前，人们并未发现酗酒的全部原因。

6·Most researchers agree that the causes of real-world violence are complex.

大多数研究人员认为，现实世界中暴力的原因是复杂的。

7·The causes of this population rebound are consequences of other human actions.

人口反弹的原因是其他人类行为的后果。

8·The author examines the practice of grade forgiveness by analyzing the causes behind it.

作者通过分析成绩宽恕背后的原因来审视该做法。

9·Many theories concerning the causes of juvenile delinquency focus either on the individual or on society as the major contributing influence.

许多关于青少年犯罪原因的理论都把焦点放在个人或社会作为主要的促成影响上。

10·Resentment against Germanic chieftains achieving high rank in the Roman military and factionalism among Roman leaders were among the causes of the period's considerable instability.

对于日耳曼部落首领在罗马军队中获得高地位的不满和罗马领导人之间的党派之争是该时期局势剧烈动荡的一部分原因。