Once the price rise had gathered momentum, speculative buying, both by those who wanted to protect their security of supply and by those who saw an opportunity for profit, was sufficient to increase prices to record levels.
一旦价格上涨积聚成势头，那些希望保证自己的供应安全者和那些视此为营利机会者就会进行投机性购买，这就足以使价格上涨到创记录水平。