1.make sth. impossible by the roots2.avoid sth. root and branch
从源头上，制度上堵塞漏洞From the source, loopholes in the system
prevent it happening from the root
completely eliminate the happening of the problem
prevent from the originwe should prevent pollutions from their original sources
Fundamentally prevent...from...
prevent the problems from happening definitely
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逸轩设计
