求翻译：撒哈拉沙漠约形成于二百五十万年前，乃世界第二大荒漠，仅次于南极洲，是世界最大的沙质荒漠。它位于非洲北部，气候条件非常恶劣，是地球上最不适合生物生存的地方之一。其总面积约容得下整个美国本土阿是什么意思？

Sahara was formed about 2.5 million years ago, is the world's second largest desert after Antarctica, the world's largest sandy desert. It is located in northern Africa, climate conditions are very harsh, is not suitable for most organisms on Earth live in the world. Its total area is about big enou

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Formation of about 2.5 million years ago in the Sahara desert, is the second largest desert in the world, second only to Antarctica, sandy desert is the largest in the world. It is situated in Northern Africa, harsh climate conditions, is one of the most unsuitable for living on Earth. Its total are

Formation of about 2.5 million years ago in the Sahara desert, is the second largest desert in the world, second only to Antarctica, sandy desert is the largest in the world. It is situated in Northern Africa, harsh climate conditions, is one of the most unsuitable for living on Earth. Its total are