The Right of insurance Subrogation is one of the basic institutions of insurance Law. Its aim is to give the insurant double insurance to see to it that the insurant's loss can be compensated fully.
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自己不能助人,还要破坏他人助人,真是双重的损失和罪过!
You can't help someone yourself, and you want to keep others from helping him. That doubles the harm and the offense!