Yet whereas petrostates such as Nigeria and Angola have ploughed money into industrial white elephants, Botswana has invested in future sources of wealth, including education and infrastructure.
然而,当尼日利亚和安哥拉等石油国家将资金投入到无用的工业项目时,博茨瓦纳却投资于未来的财富来源,包括教育和基础设施建设。