1.This region has a semiarid climate, and for 50 years after its settlement, it supported a low-intensity agricultural economy of cattle ranching and wheat farming.

有着半干旱的气候，在人们定居50年后，它支撑了一个以畜牧业和小麦植为主的低密度农业经济。

2.The Sahel region is that semiarid area south of the Sahara desert that extends from the Atlantic in the west to the Red Sea in the east.

萨赫勒地区是撒漠以南的半干旱地区，西起大西洋， 东至红海。机翻