The fact that some societies domesticated animals and plants, discovered the use of metal tools, became literate, and developed a state should not make us forget that others developed pastoralism or horticulture (vegetable gardening) but remained illiterate and at low levels of productivity; a few entered the modern period as hunting and gathering societies.
一些社会驯化了动植物，发现金属工具的用途，变得有文化，并且发展为国家。（农业社会的特点）
这一事实不应该使我们忘记：
其他社会发展了游牧主义和园艺栽培，但仍然没有文化、生产力低下；
还有少数社会以采集、狩猎的社会进入现代时期。
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