Note:
(a) I do not know what English term is for the rail project. AFP uses "tramway" for the project, while Mail & Guardian Africa, an online only media outlet based in Kenya since 2014, "light rail."
(b) "埃塞俄比亚是非洲第二人口大国"
CIA World Factbook for population in 2015: The top five in Africa are Nigeria (182m) > Ethiopia (100m) > Egypt (88m) > Democratic Republic of Congo (79m) . South Africa (54m)> Tanzania (51m).