Flow is being completely involved in an activity for its own sake. The ego falls away. Time flies. Every action, movement, and thought follows inevitably from the previous one, like playing jazz. Your whole being is involved, and you're using your skills to the utmost.

乳制品行业必须适应消费者偏好的变化。

愛は、言葉よりも行動で示すものだ。

端正其义而不谋求私利，阐明其道而不计较功利。