There is nothing to it.

可不是“什么都没有”的意思！

正解“很简单”。

A: Are pancakes hard to make? 做煎饼难吗？

B: Oh no, there's nothing to it. 不，很简单。

There is nothing in it.

正解“...不属实”。

I heard a rumor that she's leaving, but there's nothing in it.

我听到谣言说她要离开了，不过这不属实。

There is nothing in it to show that it is a translation. 

没有任何东西表明它是一个翻译。

There is something to be said for ...

正解“...还是有好处的”。

There's something to be said for living alone.

自己住还是有好处的.

You have to plan for the future, but if the future is unknowable, there is something to be said for enjoying today as well. 

必须得为未来做好计划，但如果未来不可知，也可以适当享受现在。

I think there is something to be said for walking into a place and knowing that you either love it or you don't. 

我认为步行到一个地方，并知道您喜欢它与否是有好处的.