我们誓死要报这血海深仇！

We swear to collect this blood debt.

《新英汉大辞典》

这血海深仇传了一代又一代。

This blood feud was handed down from generation to generation.

youdao

而南安普敦和朴茨茅斯的血海深仇则是历史遗留问题，两家球会的缔造者和支持者以前分别出自于于商船船员和皇家海军，二者过往纷争不断。

Southampton and Portsmouth's intense hatred stems from historical rows between those men working in the Merchant Navy and the Royal Navy.

youdao

而南安普敦和朴茨茅斯的血海深仇则是历史遗留问题，两家球会的缔造者和支持者以前分别出自于于商船船员和皇家海军，二者过往纷争不断。

Southampton and Portsmouth's intense hatred stems from historical rows between those men working in the Merchant Navy and the Royal Navy.

youdao