一种观点认为，非洲的气候变得干燥起来，驱赶他们离开森林进入热带草原。
One holds that the African climate dried out and forests turned into savanna.
我被他们带走时是七岁，离开时也是七岁，虽然我在森林里已经待了将近一个世纪。
I was seven when they took me, and seven when I left, though I had been in the woods for nearly a century.
离开河床，车在上坡路继续前行，穿过一片茂密的森林，遇到两个侦察兵，他们一动不动地趴在那里，好像与身边的岩石融为一起，然后在树林中的一片空地上，车停下来，两名持枪战士把守在那里。
Leaving the riverbed, we drove uphill through a thick forest, past two scouts, who lay as motionless as the rocks around them, and stopped in a clearing in the wood guarded by two gunmen.
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