As I said before, you don't pronounce science "sky-ence," and you don't pronounce Scirra "skeer-eh." That's just wrong! WRONG, I SAY!
Now where did I park my Skion, I have to go buy some new skissors.
I say it like, SEA-RAH... but less, uh... enunciated.
The "sci" is less like "sci-fi" and more like "scissors", and the rra is just, well.... like "bra" without the "b"?
Such funny words.
I guess another way to describe it would be to say the word "syrup" but leave the "p" off of the end.