Complex sentence: The Somali Region and the Danakil lowlands in the Afar Region have a hot, dry climate producing semi-desert conditions; the country in the lower basin of the Sobat is hot, swampy and malarious.
Split into simpler sentences: The Somali Region and the Danakil Depression in the Afar Region have a hot, dry climate producing semi-desert conditions. The terrain in the lower basin of the Sobat is hot, swampy and malarious.