The overall result has been to make entrance to professional geological journals harder for amateurs, a result that has been reinforced by the widespread introduction of refereeing.

这样做的总体结果就是业余爱好者想在专业地质学期刊上发表文章就更难了，而评审制度的广泛采用又进一步加强了这一结果。

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It is surely a new experience! Suzzane will make an introduction of three traditional foods and tell you what they meant to the American Indians hundreds of years ago.

这绝对是一种全新的体验！Suzzane 将介绍三种传统食物，并告诉你数百年前它们对美洲印第安人意味着什么。

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However, some of the genes used to manufacture GM foods have not been in the food chain before and the introduction of new genes may cause changes in the existing genetic make-up of the crop.

然而，用于生产转基因食品的一些基因以前从未出现在食品链中，因此，采用新基因可能改变农作物现有的遗传基因。

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It's in this light that the introduction, I think, of Galileo in this simile starts to make a little more sense.

就此而论，这个比喻中，关于伽利略的介绍开始有了点意义。

耶鲁公开课 - 弥尔顿课程节选

The cable network could pass by 70% of German households, and make possible the introduction of new Internet and telephone services.

ECONOMIST: Business this week | The

But uncertainty around the results of a 1958 conclave had led to the introduction of chemicals to make the color of the smoke more obvious.

CNN: March 13, 2013 -- Updated 0018 GMT (0818 HKT)

Next, make sure the introduction in the body of the email begins with an immediately attractive line.

FORBES: Three Ways to Get Your Email Answered First