1. One didn´t know from concrete examples that international sporting contests lead to orgies of hatred.
    们没有从具体的实例得知国际体育比赛导致了深仇大恨.

2. That international sporting contests lead to orgies of hatred, one could deduce it from general principles.
    了解到国际运动比赛会导致疯狂的仇恨，也可以从常理中推断出结论。