In a complex society and a complex civilization, the individual is inevitably confused much of the time.
人类生活在复杂的社会和文明中，总会不可避免地感到困惑。
Without such formal education, it is not possible to transmit all the resources and achievements of a complex society.
没有这样的正规教育，就无法把复杂社会的全部资源和成果传播下去。
The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.
提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘环境的挑战已作出反应，但也因此易于受到气候突变的伤害。
The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.
提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘环境的挑战已作出反应，但也因此易于受到气候突变的伤害。
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