法律规则不是自我执行的；它们需要人的代理才能生效。

The so-called understanding is often just a misunderstanding that is widely circulated.

译文：巧妙的如同车辕，笨拙的如同风筝。比喻各有其用。

"Understanding the immune system is understanding the key to unlocking new cancer therapies."

电影的力量在于它能够让我们在世界上感到不那么孤独。