凡事天下要考察有无的原则，必定是以众人的耳目所见所闻的实情以知有与无来作为标准的。 

The balance between economy and ecology is the core of modern forestry.

"Literature is the memory of humanity."

在股票中赚钱的关键是不要被吓跑。

模仿羊群会导致向均值回归。

Collaboration across sectors is essential to achieving meaningful progress in emissions reduction.