Every burger we sell represents a step toward a more sustainable food system.

酸的强度由其提供质子的能力来衡量，碱的强度由其接受质子的能力来衡量。

The function of a system of hypotheses is to warn us beforehand what will be our experience—to enable us to make accurate predictions.

The historian’s task is to bring the dead to life.

有时我希望有人能找到我

每个人都有自己的故事，每个故事都值得被倾听。