求翻译：4） 变现能力差：房地产具有位置固定、用途不易改变等特性，且投入资金额大，高平 (2000) 指出开发周期长、销售期不确定性，是其变现能力差的主要原因，因此不像股票和外汇那样可以迅速变现。是什么意思？

4) and poor liquidity: real estate has a fixed location, uses easy to change characteristics, and invested a large amount of money, Cao Bang (2000) pointed out that the long development cycle, sales of uncertainty, is the main reason for the poor liquidity and therefore do not like stock and foreign

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4) is poor: with position fixed, use is not easy to change the characteristics of real estate and investment funds, Gao ping (2000) pointed out that long, sales uncertainty during the development cycle, is the main reason is poor, so unlike the stock and foreign exchange can be realized quickly.

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