浮动汇率并非解决所有经济问题的万能药，但它们可以提供一种有用的调整机制。

The wall tells a story.

The history of life is written in A, T, C, and G.

所有好书都有一个共同点——它们比真实发生的事更真实。

We try to buy stocks selling at a discount from their asset value.

The beauty of the olfactory system is that it is both simple and complex, allowing us to detect and discriminate an almost infinite number of odors.