The best way to understand this concept is through a simple graph of tasks
通过一个简单的任务图表可以很好的理解这个概念.
Recursion can be a difficult concept to tackle, so lets walk through this one.
递归是十分难于处理的概念，因此让我们一起来查看这个概念。
Through introducing the concept of objective, Marx has solved this difficult problem.
而通过引入目的概念，马克思解决了这一难题。
This is an artist's concept of water flowing through a canyon on ancient Mars.
这是远古火星上峡谷间的流水艺术概念图。
This is an artist's concept of water flowing through a canyon on ancient Mars.
这是远古火星上峡谷间的流水艺术概念图。
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