So was the speculative activities, borrow (equal to sell, here) JPY and US Dollar, currencies with lower interests (lower or least cost), to buy everything.

由此产生的投机行为是：借入(等同于卖出)日元、美元这些低息货币，然后买任何东西。

youdao

As the boom of commodity prices and profits are good, a lot of credit to be used for speculative activities of speculators, the credit expansion greatly exceeds production growth.

由于工业繁荣时期商品价格上涨和利润优厚，大量信贷被投机者用来从事投机活动，信用膨胀大大超过生产的增长。

youdao

But if we see speculative activities with clear linkage in the stock and futures markets on the one hand and the currency market on the other, we will continue to do what is necessary.

但当我们看到股票和期货市场的活动与货币市场的活动有很清楚的连锁关系，我们会做我们所应该做的事。

youdao

We could be underestimating this as speculative activities were largely not present in 1990-91.

FORBES: How To Play $220 Per Barrel Oil

"As long as the housing shortage persists, we have no alternative but to restrict external demand and curb speculative activities, " he said.

BBC: Hong Kong leader CY Leung in housing pledge

The Vickers plan, based on the Independent Commission on Banking report led by Sir John Vickers, is designed to keep saver and business deposits from being compromised by the more speculative activities typically undertaken by investment banking operations.

BBC: EU agrees to cap bankers' bonuses