下面这段话是萨版的经济学中的解释，我能看懂英文，但是我理解不了为什么：
Assets vary in their liquidity. An asset is said to
be liquid if it can be converted into cash quickly and
with little loss in value. Most marketable securities,
including common stocks and corporate and government
bonds, can be turned into cash quickly for close
to their current value. Illiquid assets include unique
assets for which no well-established market exists. For
example, if you own the only Victorian mansion in a
small town, you might fi nd it diffi cult to sell the asset
quickly or at a price near its realistic market value—
your house is an illiquid asset. Because of the higher
risk and the diffi culty of realizing the asset values
quickly, illiquid assets or loans require higher interest
rates than do liquid, riskless ones.