谷物生产的效率不是选择,而是必需。
The power of the Internet lies in its ability to connect people and ideas.
Profitability and environmental responsibility must go hand in hand—there is no other way.
存在是一种风险,但不存在也是一种风险。
多线进化论是研究特定文化如何适应特定环境的进化过程。