It is going to be a wonderful day - I am positiveof it!
我乐观地认为，这将是精彩的一天。
2
There's no fooling your body and your bread belly is proof positiveof this!
人没法欺骗自己的身体，你的肚子是最好的证明！
3
If you have good reason to believe you're an outlier, go for it, just be cautious - it's not just the fact that small scale changes can have less positiveof an impact.