这场叛乱是历史上最血腥的事件之一。

The rebellion was one of the ___bloodiest events in history.

这场战争是该国历史上最血腥的冲突之一。

This war was one of the ___bloodiest conflicts in the country's history.

这是我看过的最激烈的足球比赛，两队球员都拼尽了全力。

This was the ___bloodiest football match I've ever seen—both teams gave their all.