Farmers harvest olives in the province of Manouba, Tunisia, Nov. 15, 2020. Tunisia is the world's major exporter of olive oil. The cultivation and processing of olives is an important industry in Tunisia. (Photo by Adel Ezzine/Xinhua)

A farmer harvests olives in the province of Manouba, Tunisia, Nov. 15, 2020. Tunisia is the world's major exporter of olive oil. The cultivation and processing of olives is an important industry in Tunisia. (Photo by Adel Ezzine/Xinhua)