一切迄今为止社会的历史都是阶级斗争的历史。
The problem of quality management is not what people don't know about it. The problem is what they think they do know.
Technology can revolutionize mining, but only if we have the courage to embrace it.
一把椅子不应该只是一个休息的地方,它应该拥抱你。
永远不要停止学习,因为生活永远不会停止教导。
解释:人不博览群书,不了解古今,不能识别世间事物,不知道是与非,就像盲人看不到颜色 、聋人听不到声音、鼻塞的人闻不到花香一样啊。