The most convincing explanation is that when someone is finding it difficult to understand what is said to them, he/she engages in a form of lip-reading: he/she will observe the lips of the talker and mimic the talker's lip movements.
Lake Tanganyika is an African Great Lake. It is estimated to be the second largest freshwater lake in the world by volume, and the second deepest, in both cases, after only Lake Baikal in Siberia; it is also the world's longest freshwater lake.
The biggest dam in South Africa is the Gariep Dam, previously known as the Hendrik Verwoerd Dam. When full, it contains nearly 6000 million cubic metres of water spread over m â¦ ore than 370 square kilometres. The dam was completed in 1971. The deepest lake in Africa (Tanzania, Zaire & Zambia) is Tanganyika. With a depth of 4,708 ft (1,435 m).