低工资和反复或长期失业经常相互作用，削弱了自立能力。
Low wages and repeated or prolonged unemployment frequently interact to undermine the capacity for self-support.
NGC7771组星系相互作用，反复关闭通道，最终在宇宙时间尺度上形成星系与星系的结合。
Galaxies of the NGC 7771 group are interacting, making repeated close passages that will ultimately result in galaxy-galaxy mergers on a cosmic timescale.
与自然生态系统一样，这是一种相互作用和相互依存的关系，通过能量、物质和信息的反复循环和流动，构成一个有机的整体。
Just as natural ecosystem, this is an interaction and interdependent relationship, forming a complete unit through circulation and flow of energy substance and information.
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