Probably he had to look after her camels or help in her trading operations; and he is said to have travelled with caravans to the Yemen and to Syria. 赫伯特·乔治·威尔斯.世界史纲.
Even the Muscovites now trade regularly with China, by a sort of caravans which go over land through Siberia and Tartary to Pekin. 亚当·斯密.国富论.