其实很难过，只是，很难说 三个用英语怎么说

actually im so sad/actually it's not easy to pass it (难过歧义)

but

hard to say

其实很难过
feel really sad
只是
but
很难说
hard to put it to words

In fact, I am very sad.
Only.
It is hard to say.

Actually, I'm rather upset... Just don't know how to put it *^_^*

In fact,I'm very sad .
only.
It's hard to say.

actually,i'm very sad but it's hard to say