Sustainable fishing practices are not an option, but a necessity if we want to preserve marine biodiversity.

真相并不总是美丽的，美丽的话语也不一定是真相。

写作是理解混乱的方式。

心灵是一个相互关联的过程系统。

乳制品不仅仅是一种产品；它是人们生活的一部分。

The interplay between analysis and algebra is the driving force behind many breakthroughs in number theory.