That means a usual 40-liter tank of gas costs more than a state-worker's average monthly earnings.

这意味着一箱普通的40升汽油的价格比一名国家工作人员的月平均收入还要高。

But in Kenya and South Africa, the figure is significantly lower amounting to less than five percent of average monthly earnings.

手机费用如此高的原因是缺乏市场竞争。