Yes, Mary was a Virgin

Much ink has been spilled over whether or not Mary remained a Virgin throughout her entire life (She did, and I think there's plenty of internal evidence of that). But, this is not what I want to argue. Isaiah 7:14 says the following, in the King James Version of the Bible, " Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Emmanuel".
Well, some have argued that "virgin" is a bad translation, and that "maiden" or "young woman" would fit better.
I fail to see how. So, let's go look up what the Hebrew says. (ha·‘al·mah)
But, see, the New Testament wasn't written in Hebrew. It was written in Greek (though, there is some debate over whether or not Matthew was written in Hebrew or Aramaic).
So, let's see what the GREEK version of this same verse says (Ησα?ας (Isaiah) 7:14 :: Septuagint (LXX))
So, what does the NEW TESTAMENT say?
Matthew 1:23, "Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us".
Luke 1:26-27, "And in the sixth month the angel Gabriel was sent from God unto a city of Galilee, named Nazareth, to a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary".
There are other places that the same Greek word is used in the New Testament (not often, though, parthenos), but, one thing that is clear, is that the writers of the Matthew and Luke (I like to call them, Matthew and Luke), and Mary herself, in Luke 1:34 affirms her virginity.
So, it seems to me, like another case of "academics", who think they know more about the Bible than 2000 years of Church history. And yes, I am aware of early Jewish and Pagan opposition to Mary being a virgin. (Akiva ben Joseph: Akiva, the Canon, and the Disastrous First Revolt)