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1. The desert is a harsh environment that requires careful planning and preparation.
沙漠是一个严酷的环境，需要仔细规划和准备。
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2. The desert is a place where plants struggle to survive due to the lack of water and nutrients.
沙漠是一片植物难以生存的地方，因为缺乏水分和养分。
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3. The desert is a symbol of the harshness and isolation of the Sahara, as well asthe resilience of the nomadic people who inhabit it.
沙漠是撒哈拉的象征，代表着沙漠的严酷和孤立，以及居住在其中的游牧民族的坚韧不拔。