have a good hold of

• 充分地理解

have a good hold of的用法和样例：

例句

1. But to truly understand them,you'll have to stay months or years.
   但要真正地理解的话，就得几个月甚至几年的时间。
2. We should have a correct and comprehensive understanding of Mao Zedong Thought as a system.
   我们要准确地完整地理解毛泽东思想的体系。