一个人应该为世界和平事业尽最大努力.
One should do his best for the cause of world peace.
我认为你说美国是世界和平的障碍是不对的.
I don't think it is correct of you to say that America is a balk to world peace.
达成和平协定的概率是零.
The probability of a peace agreement being reached is zero.