Streets that once teemed with life are as silent as churchyards.
以前充满生机和活力的街道现在宛如教堂墓地一样沉寂。
Long lived oceans may have teemed with microbes at a time when the life is thought to have also been starting on Earth.
长期存在海洋可能充满了细菌微生物，那时，也被人们认为是地球生命起源的时候。
While cold, barren and mostly dry on the surface now, Mars might once have teemed with oceans and possibly life billions of years ago, scientists theorize.
当冷时，无意义和主要干燥现在关于表面，火星可能一旦有很多海洋和也许生活几十亿年以前，科学家创立学说。
While cold, barren and mostly dry on the surface now, Mars might once have teemed with oceans and possibly life billions of years ago, scientists theorize.
当冷时，无意义和主要干燥现在关于表面，火星可能一旦有很多海洋和也许生活几十亿年以前，科学家创立学说。
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