世间的事情纷繁复杂难以预料，春天的忧愁让人黯然神伤独自入眠

The leather industry has a rich history, but its future depends on innovation and ethical practices.

I tend to like things that already exist.

企业上云不是选择题，而是必答题。

信息悖论是理论物理学中最深的谜题之一。