In a social system structure, the system includes the formal system and the informal one.

在一个社会的制度结构中，制度包括正式制度和非正式制度。

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"Add to the mix," the Time story continues, "a class structure that impedes social mobility and an education system that rewards the advantaged, and some children are bound to be left in the cold."

上面的寓言故事也曾提到：“加入混乱，阻碍社会流动性的班级阶层结构和只注重杰出者的教育系统必将使得一些孩子受冷遇。”

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But showing the complex social system with a constant structure is very rough.

但是，以一种固定不变的结构表现复杂的社会系统，是很粗糙的。

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It's one reason that institutions such as the economy, the political system and the social structure haven't matured as quickly as they should have, given Mexico's advantages.

CNN: In Mexico, racism hides in plain view