单词：sedimentary compaction
沉积压实作用
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But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough
发表于:2018-12-07 / 阅读(135) / 评论(0)
火星生命
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Lesson 41 Decision 决定 Words: commerce n. 商业 commercial adj. 商业的，贸易的 commercialize vt. 使商业化，使商品化 commission vt. 委任，任命；委托，委托制作 commit vt. 犯（错误），干（坏事） commitment n. 信奉，支持；许诺，委托事项 committed adj.
发表于:2018-12-30 / 阅读(113) / 评论(0)
胡敏托福词汇记单词
胡敏托福词汇记单词