This is the most bloody incident made by Iraqi insurgents.

这是伊拉克武装分子迄今制造的最血腥的事件。

youdao

Learn from the near-misses, learn from the trivial incident, learn from other's accident, are best ways to avoid the learning in a bloody way.

从未遂事故中、从轻微的事故中、从别人的事故中学习，是避免去亲身感受血的教训的最好方法。

youdao