哪位超级英语高手来帮助翻译上海人民英雄纪念碑碑文？

问题描述：

伟大的人民解放战争中，在上海牺牲的人民英雄们永垂不朽。
伟大的《五四》运动以来英勇的人民革命斗争中，在上海殉难的人民英雄们永垂不朽。
由此上溯到一八四零年鸦片战争以来，为了反对内外敌人，争取民族独立解放，震区人民自由幸福，在上海历次斗争中牺牲的人民英雄们永垂不朽。

问题解答：

Great people's liberation war, the sacrifices of the people in Shanghai are immortal hero.
The great "May 4th" campaign has been a heroic people in revolutionary struggle, and martyrdom in Shanghai in the People's Heroes are immortal.
This dates back to 1840 Opium War, in order to oppose internal and external enemies and fight for national independence and liberation, the freedom of happiness earthquake zone, in Shanghai in the past struggle to the People's Heroes sacrifice their immortal.