收入不能全部用于生活消费和生产消费，还有第三个原因，即持币偏好——人们

收入不能全部用于生活消费和生产消费，还有第三个原因，即持币偏好——人们倾向于以货币形式持有收入或资本。凯恩斯认为人们的持币偏好基于三种动机：

交易动机，即为了应付日常交易而持有现金；
谨慎动机：为了防止意外，或可能出现的有利进会进行交易的动机；
投机动机：持有货币，并试图从中获利的动机。

結果 (英文) 1:

Income is not available for consumption and production and consumption, there is a third reason, that hold out preferences - people tend to hold in monetary income or capital. Keynes argued that people hold out preferences based on three motivations:

transactions motive, that in order to meet the daily cash transactions;
cautious Motivation: In order to prevent accidents or possible beneficial transactions will be conducted into the motives;
speculative motive : holding money and trying to make a profit motive.

結果 (英文) 2:

Income can not be used for consumption and production and consumption of all, there are third reasons, namely increasing preference -- people tend to hold the income or capital in the form of currency. Keynes think that people's preference based on cash three motives:

the transaction motive, which hold cash in order to cope with the daily transaction;
the precautionary motive: in order to prevent accidents, advantageous in transaction motive or possible;
the speculative motive: to hold money, and attempts from the profit motive.

結果 (英文) 3:

Income cannot be all for domestic consumption and production, consumption, there is a third reason, namely cash position preference – people tend to form monetary holding income or capital. Keynes thought preference based on three people holding money motivation:

transaction motives, held that in order to cope with the everyday transactions and cash;
careful motivation: in order to prevent the accident, or the possibility of beneficial's motive for trading;
speculative motive: holding money, and trying to make a profit motive.