能源的未来在于包括传统能源和可再生能源在内的多样化组合。
The future of energy lies in a diversified mix that includes both traditional and renewable sources.
经济学的任务不仅在于解释现象，更在于为社会提供实际的建议和政策。
我们都是行走的被遗忘的书的图书馆。
译文：学习、询问、思考、辨析、实践，都是做学问的方法，没有只学习而不实践的。
The leather industry must evolve to meet both environmental standards and consumer expectations without compromising quality.
Emotions are biological signals that prepare the organism for action.