文章是用来阐明道理的。

A business has to be involving, it has to be fun, and it has to exercise your creative instincts.

I believe in hard work and persistence.

The social responsibility of entrepreneurs is more important than making money.

地球及其周围的水域实际上必须具有其阴影所揭示的形状，因为它以完美的圆弧遮蔽了月亮。

我不知道第三次世界大战会用哪些武器，但第四次世界大战中人们肯定用的是木棍和石块。