Certain forms of knowledge come to exist in certain places.
特定知识模式产生于特定地点。
And use after school hours to learn and master a certain UG graphics knowledge.
并利用课余时间学习并掌握了一定的UG绘图知识。
Burglar must firmly grasp the knowledge necessary to maintain a certain of vigilance.
防盗知识也要牢牢掌握，要保持一定的警惕性。
Thus, first of all, management refers to the knowledge management based on certain knowledge.
正因为如此，管理首先就是以某种知识为基础而推行的对知识的管理。
Anyone who stops absorbing new knowledge is certain to lag behind.
任何人如果停止吸取新知识，就肯定会落后。
Anyone who stops absorbing new knowledge is certain to lag behind.
任何人如果停止吸取新知识，就肯定会落后。
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