Individuals are the sole cause of anything that's ever happened.

所有发生的一切都是从个人开始的。

Most conservatives accept that working mothers are not its sole cause.

而大多数保守派认为，工作的母亲不是造成这个问题的惟一原因。

But the virus itself cannot be the sole cause of colony collapse disorder.

但是病毒本身不可能是蜜蜂王国瓦解的唯一原因。

Until then, it is premature to conclude that driver error is the sole cause of SUA.

在那之前，人们认定驾驶员过失是突然加速问题的主要原因，显得为时过早。

Several rail experts have said they doubt that lightning was the sole cause of the crash.

几位铁路专家说他们怀疑闪电是造成火车相撞的唯一原因。