热钱这个词的确很热，很多词典都收录了，你看看他们的解释自然就明白了

Money that runs from one sector or investment to another very quickly. Hot money may be hedge funds attempting to take advantage of a trend. Hot money also may be funds that flow into another country

and will just as quickly flow out if the fundamentals seem to be changing even slightly.
hot money. (2003). In Webster's New World Finance and Investment Dictionary

Investment funds capriciously seeking high, short-term yields. Borrowers attracting hot money, such as banks issuing highyielding CERTIFICATES OF DEPOSIT, should be prepared to lose it as soon as

another borrower offers a higher rate.
HOT MONEY. (2003). In Dictionary of Finance and Investment Terms, Barron's.

noun (1936) : investment funds intended for the highest short-term rate of return.
hot money. (2004). In Merriam-Webster's Collegiate(R) Dictionary.

n. Money that is moved by its owner quickly from one form of investment to another, as to take advantage of changing international exchange rates or gain high short-term returns on investments.
hot money. (2003). In The American Heritage® Dictionary of the English Language.

Funds that are controlled by investors who seek high short-term yields when the funds are likely to be reinvested somewhere else at any time. Some financial institutions attract hot money by offering above-

average yields on certificates of deposit. However, if the rate is lowered, the funds are likely to be lost to another institution or investment.
hot money. (2003). In Wall Street Words.

Temporary, fluctuating changes in interest rates among nations possibly due to expected revaluation of foreign currencies. A country may enact exchange controls to minimize speculation in foreign exchange

and achieve stability in balance of payments.
hot money. (1995). In Dictionary of Economics, Wiley.

short-term and volatile CAPITAL MOVEMENTS between countries that take place primarily in response to interest rate differentials between financial centres (ARBITRAGE) or in anticipation of likely

DEVALUATIONS or DEPRECIATIONS and REVALUATIONS or APPRECIATIONS of foreign currencies (SPECULATION). Speculative hot-money flows are especially disruptive to the conduct of ‘

orderly’ exchange-rate management and the maintenance of balance-of-payments equilibrium, and are thus sometimes subjected to FOREIGN EXCHANGE CONTROL regulation by the authorities. See

CAPITAL INFLOW, CAPITAL OUTFLOW.
hot money. (2006). In Collins Dictionary of Economics.

Apart from its use in the world of crime to describe stolen or counterfeit money, hot money is a term sometimes used in the sphere of international finance to refer to funds that move quickly from one country

to another in search of the highest rates of interest. See Balance of payments, Below the line, Rate of interest.
Hot money. (1994). In The Penguin Business Dictionary.

Funds which flow into a country to take advantage of favourable rates of interest and shift elsewhere when relative rates favour such a move.
hot money. (1999). In The Penguin International Dictionary of Finance.

Funds which flow into a country to take advantage of favourable rates of interest in that country. They influence the balance of payments and strengthen the exchange rate of the recipient country. These funds

are highly volatile and will be shifted to another foreign-exchange market when relative interest rates favour the move. See arbitrage; Bank for International Settlements.
hot money. (1998). In The Penguin Dictionary of Economics.

short-term CAPITAL INFLOWS and CAPITAL OUTFLOWS between countries which occur in anticipation of likely EXCHANGE RATE changes (devaluations and revaluations), or in response to

INTEREST RATE differentials between financial centres. See SPECULATION, ARBITRAGE.
hot money. (2006). In Collins Dictionary of Business.

哇，现在才发现自己基本是英语的文盲，领教了，谢谢您，谢谢