起因的英文：
origin
wedge

参考例句：

The disease is caused by a genetic defect.
这种疾病的起因是基因缺陷。

A freak storm was to blame for the power outage.
停电的起因是一场特大暴风雪。

Their underlying causes and mechanisms are divergent.
它们的根本起因和作用是不同的。

Present evidence points to a volcanic origin far in the past for the majority of the craters
最近的资料表明，现在比过去更倾向于火山是大多数环形山的起因。

The source from which something arises;an originator.
起因其它事物发生的起源;起因

This is the only and sovereign agent.
这是唯一的，至高无上的起因。

He is researching into the causes of cancer.
他正在研究癌症的起因。

It is necessary to research into the cause of cancer.
深入研究癌症起因很有必要。

A cause of amazement;a marvel.
奇迹引起惊奇的起因;奇迹

They researched into the causes of the disease.
他们研究了这种疾病的起因。

origin是什么意思：
n. 起源；出身；原点；起端

a person with an original
有创作头脑的人

It was edited from the original text.
这是根据原文本编译的。

a Spanish rendering of the original Arabic
阿拉伯文的西班牙文译文.

Golde Meir was an original.
果尔达·梅尼是一个有独创性的人。

Little of the original architecture remains.
原先的建筑物几乎没有残留。

wedge是什么意思：
n. 楔子，楔形物，三角木；导致分裂的事物
v. 挤进，塞入；楔入，楔住

The thin end of the wedge is dangerous.
楔的细端是危险的。

To split or force apart with or as if with a wedge.
楔入，劈开用或好象用楔子劈开或使分裂

A wedge of cake, cheese,etc
一角蛋糕、干酪等.

His divisive politics drove a wedge into the organization.
他的分离政策造成该组织的分裂。

Wedged together at the broken ends. Used of a fractured bone.
挤入的，插紧的在断裂的末端挤在一起的。用来描述断裂的骨头 。