研究人员发现了七种主要的适应性反应，包括增加流动性、永久定居点的搬迁、维持生计的食物的变化以及依赖与其他群体的贸易。

The researchers identified seven major adaptive responses, including increased mobility, relocation of permanent settlements, changes in subsistence foods, and reliance on trade with other groups.

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当然，增加流动性不一定需要个人投资者参与。

To be sure, retail investors are not required for incremental liquidity.

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11联储同时还采取了其他行动来增加流动性，以改善金融市场职能。

The Federal Reserve also took a number of additional actions to increase liquidity and to improve the functioning of financial markets.

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