fallv.落下；下落；掉落；突然倒下；n.(雪、岩石等的)降落;发生;秋天（AmE=autumn）
There is still a risk that the whole deal will fall through.
整桩买卖化为泡影的风险仍然存在。
I have a little money in the bank to fall back on.
我在银行还有一点钱，需要时可以动用。
Falling interest rates may help to bolster up the economy.
利率下降可能有助于激活经济。
