Patterns of activity differ between species. 同種的活動形式不同。
The security afforded by the knowledge that an income is provided in every life situation has the potential to encourage forms of solidarity-based economic activity. 由知識提供的保障是提供給任何生存環境下的一份收入，它傾向於鼓勵基於團結的經濟活動形式。
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