过不了多久，在加纳路边购买“Kofi broke man ” — —烤芭蕉配花生 — — 可以不需要现金，从而让小贩富在当下，储为未来。
Before too long, buying a “Kofi broke man” – a roasted plantain with groundnuts – by the roadside in Ghana could be a cashless transaction, one that helps the vendor prosper in the present – and save for the future.