あいつの考えていることはさっぱりわからない。の英語

I have no idea what that guy is thinking.

The more I think, the less I understand.

I cannot quite see his motive.

Don't say anything without thinking.

I don't know what I don't know.

I don't know what you are thinking about now.

I cannot think of any ideas.

I'm really confused.

I am not certain what I have in mind myself.

I cannot really think of any good ideas.

It is a subtle idea

The idea eludes my grasp.

How rash of him to have done such a thing!

I can not but think so.

I don't know what is what.

It's not enough to tell my opinion.

There's no saying what may happen.

I cannot think of any good ideas.

the action of speaking without thinking deeply

I don't understand the idea

vagrant thoughts [fancies]

I can't come up with a good idea.

I cannot say what I myself thought.

It is a foolish idea.

Nobody can tell what it is.

I don't understand what I'm supposed to do.

Don't take it so hard!

I don't really understand what kind of thing that is.

Think as hard as I might, I couldn't hit upon a good idea.

I don't like the idea much.