I believe if time to flow back, he could not be mad.

我相信，如果時光倒流，他一定不會不理性了。

2.

I believe if I can make others happy I will be truely happy.

我相信假如我能讓別人幸福，我就會真正幸福。

3.

So I believe if I try my best to study Japanese, I will also be good at Japanese in the future.

所以我相信如果我能象學習英語那樣拼命的學習日語，在不久的將來，我也會擅長日語。

4.

I believe if a slaughter house have glass wall, everyone will be vegetarian.

我相信，如果屠宰場有玻璃牆，每個人都會變成素食者。

5.

I believe if you don't have that set of things in your corporate culture, then you can't do large-scale invention.

我相信，如果你沒有，在你的企業文化的東西，那麼你不能做大規模的發明。

6.

Because I believe if you want to learn the culture of a society you have to stay in the suburbs or the countryside.

因為我相信，如果你想要了解一個社會的文化，你必須得待在郊區或城市的邊緣。

7.

I believe if you are able to communicate your ideas and display your intellect orally you will be successful in your life.

我認為如果你能夠傳達你的觀念顯示你的智慧，那麼在生活的舞臺上你是成功的。