煤矿工人是美国工业实力的无名英雄。
Coal miners are the unsung heroes of America's industrial strength.
探索未知是人类永恒的追求。
Chance is a word void of sense; nothing can exist without a cause.
The spirit of science lies in constant questioning and exploration, keeping us forever curious about the world.
The rule of law requires that laws be general, public, prospective, clear, and consistent.