The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

恭敬乃是处事圆满的根源，谨慎则是全身的关键。

Battery recycling is a key link in the sustainable development of the new energy industry.

购买工具。从购买你能找到的最便宜的工具开始。升级你经常使用的工具。如果你在某项工作中最终选择使用了某种工具，就买你能负担得起的最好的。