地理学的研究是研究人与环境之间的关系。

过去从未死去，它甚至还未过去。

In future competition, only those enterprises that can continuously innovate and quickly adapt to market changes will survive and thrive.

白天鹅不每天沐浴，也是洁白的；黑乌鸦不每天暴晒，也是黑的。