符号不仅仅是文化的反映，也是变革的工具。

"In observational studies, we often have to rely on assumptions that are not directly testable."

自行车是我改变的工具。它是我产生影响的手段。

How sharper than a serpent's tooth is to have a thankless child.

The secret of change is to focus all of your energy not on fighting the old, but on building the new.

Justice means minding your own business and not meddling with other men's concerns.

渔业文化需要传承，但更需要创新，要与时俱进。