When we speak of 'meaning' a word， we are in the first instance speaking of a certain kind of act.

我从不回头看，我向前看。

Sustainability isn't just a buzzword; it's a responsibility we owe to future generations.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

Sustainability is no longer an option—it's a business imperative for long-term survival.

就好像让人伏在剑刃上，而期望他能长寿一样。