—— 请按键盘 空白键 开始游戏 ——

The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
如果你不愿意失败,你就没有准备好成功。
可持续性不是一种趋势,而是一种责任。乳制品行业必须在环境管理方面发挥领导作用。
Our culture is not just something we carry in our hearts; it is the very fabric of our existence.