Explanation: A firm without sufficient working capital has liquidity problems and may look for a cash injection or a cash infusion.
Working capital, 流動資本。Liquidity, (資本的)流動性。當一個企業缺乏足夠的流動資本時，它將面臨著資本流動不足的問題，這時企業就會迫切期望尋找到現金注入的方法。請看例句：
1. The CEO said in the executive meeting that their company need cash injections to meet ‘liquidity’ needs. They include working capital to buy inventory and funds to pay bond interest due tomorrow.
2. There are lots of ways liquidity could be injected into small companies if the will was there. It could take the form of low interest loans from the government.
