the reason why coal is still a very valuable source of power is that atomic power is not available i

题目

the reason why coal is still a very valuable source of power is that atomic power is not available in sufficien.
这么多的从句一环套一环,真得不知道该如何翻译,应该从哪里下手?

答案

the reason .is that atomic power is not available in sufficient.这是主句.
that atomic power is not available in sufficient 主句中的从句.the reason.
why coal is still a very valuable source of power 原因状语从句.修饰 the reason.
翻译为：煤炭依旧是一种非常有价值的供电资源,是因为原子能供电并不充足.
本人英语专业大四生,