英语高手帮我翻译下，不要用翻译机，急用，谢谢了，不要翻译机，好的还可以加分呢

公元前四百八十年，波斯国国王王薛西斯一世(罗德里格·桑托罗)统率五十万大军(号称500万之众)、战舰千余艘，大举进攻希腊。并一路南下逼近德摩比利隘口。不可一世的薛西斯一世还向希腊各城邦发出劝降书，希望小邦们不战自降。这其中自然也包括斯巴达城。结果，薛西斯的使者在众多希腊人的反抗热潮中吃尽了苦头。此时，为了抵御强敌，勇猛的斯巴达国王列奥尼达斯(杰拉德·巴特勒)亲率由各处集结而来的希腊联军约七千人，率先赶到温泉关，扼守住地势险要的关隘之地。
480BC, the Persian Empire's emperor Xerxes I (played by Rodrigo Santoro) lead an army of half million (exaggerated as 5 million) and over a thousand warships invading Greece. His army moved southward closing on to the Thermopylae Pass, the arrogant Xerxes also had sent out surrender ultimatums to all the Greek city states hoping that those smaller states would surrender without a fight, which of course included Sparta. As a result, messagers sent out by Xerxes were all having a hard time with their missions. All The Greek city states were furious with Xerxes. At that moment, in order to repel the the great threat from the Persian army, the brave Spartan king Leonidas (played by Gerry Butler) lead a Greek allied army of 7000 and rush to defend Greece.
另一方面，已经在激烈的海战中消耗甚大的波斯军队，显然已经无法在两天内在陆战中组织起什么强烈的攻势，因此，两军的短兵相接并未一触即发。但两天后，狡猾的薛西斯派遣一支精锐部队偷袭关后，措不及防的希腊守军很快就被击溃。为保存实力，列奥尼达斯在腹背受敌的情况下，命令希腊联军的主力迅速撤退，以保存实力。自己亲率三百名斯巴达勇士殿后。与汹涌而至的数万波斯军展开了血腥的殊死搏斗，最终，这三百位勇士全部战死，也让波斯军队在攻破温泉一战中关付出了两万人死伤的惨痛代价……
On the other side of the war, The Persian army already had a heavy lost on sea battles. It was rather obvious that they would not be able to organized an attack on land too soon. Therefore the two armies' encounter would not happen within a couple of days. But two days later, that cunning Xerxes had sent out an elite attacking force carried out a sneak attack on Leonidas from the back. The Greek army were stunted and beaten quickly. Under attack from two fronts, In order to conserve their batlle strength, Leonidas ordered his army to retreat. He lead a rear guard of just 300 to protect the Greek army's retreat. The Persain army were throwing everything they got at him and his brave 300 warriors. All 300 of them died but not before they had inflicted a total of 20,000 deads on the Persain army. Xerxes had paid a heavy price for invading of Greece.....

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in 480 BC，the king of the Persia Artaxerxes（Rodrigo Santoro ）generaled 5 hundred thousand troops（declaring amount of 5 millions），thousand of warship，launched the biggest offensive attack to the Greece。and approached to the Thermopyles gap along the way down to south。The defiant Artaxerxes also sent the terms of surrender to eech city-state of the Greece，expected that those little city will surrender without fighting。