Essentially, the new neurons may aid formation of new memories by keeping the hippocampus from filling up with old ones.

本来，新的神经元就可能是通过填补海马体中的旧记忆来形成新记忆的。

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For example, slow freezing leads to the formation of larger ice crystals. This results in relatively large voids, which aid in the escape of water vapor during sublimation.

例如，缓慢冷冻造成较大的冰晶排列，造成冰晶升华时有较大的逃逸通道。

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This paper explores its mechanism, analyzes and discusses some field methods for evaluating the pre-fracturing formation pressure, and hopes can provide reference and aid for fracturing work…

文中对此进行了机理上的探讨，并分析讨论了压前地层压力的一些现场评价方法，以期对国内油田的压裂工作提供借鉴和帮助。

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But without strong economic growth, it seems likely that family formation and birthrates will continue downward everywhere, particularly as economic realities force reductions in state aid.

FORBES: America's Baby Bust: How The Great Recession Has Jeopardized Our Demographic Health