We would hear their caravans approaching our neighborhood, the mewling of their sheep, the "baaing" of their goats.
我们会听到他们的商队接近我们的社区的声音，绵羊咪咪，山羊咩咩。
2
Trade was the mainstay of the urban economy in the Middle East, as caravans negotiated the surrounding desert, restricted only by access to water and by mountain ranges.