能源的未来不是要在化石燃料和可再生能源之间做出选择,而是找到确保可靠性、可负担性和可持续性的正确平衡。
中心地是交通和通讯线路的交汇点。
The beauty of mathematics lies not only in its ability to describe the world but also in its power to reveal the hidden structures that govern it.