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1·Nostalgia comes from the Greek word for homecoming (nostos) and pain (algos).

“怀旧”来自希腊单词“回家”（nostos）和“痛苦”（algos）。

2·Algorithmic trading programs, or 'algos,' automatically buy and sell a wide variety of assets based on mathematical models.

这就是演算法交易——根据数学模型自动买卖各种资产。

3·This gives secondary effects like very fast graph algos, recommender systems and OLAP-style analytics that are currently not possible with normal RDBMS setups.

此外，Neo4j还提供了非常快的图形算法、推荐系统和OLAP风格的分析，而这一切在目前的RDBMS系统中都是无法实现的。