在这个观点中，通过沉重的现金税、劳动税和实物税、限制流动性和各种形式的胁迫使有着农奴地位的俄国农民保持贫穷。
In this view, Russian peasants' status as serfs kept them poor through burdensome taxes in cash, in labor, and in-kind; through restrictions on mobility; and through various forms of coercion.
限制流动性的风险可能就更需要技巧，因为这种风险取决于其他人有多意愿在市场上进行交易。
It is trickier to limit liquidity risk, which depends on the willingness of others to trade in markets.
将一般的衍生品放到交易所可以理解，但是太多的限制则有损流动性。
Putting routine derivatives on exchanges makes sense, but too many restrictions might sacrifice liquidity.
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