博客正在逐渐成为主流。

Blogging is gradually becoming mainstream.

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幸福经济学正逐渐成为主流。

Happiness economics is slipping into the mainstream.

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自那时以后，全身麻醉逐渐成为主流。

Since then, general anesthesia has become a mainstay.

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They weren't very successful in growing it in huge amounts, but that short stapled cotton that eventually was the form of cotton that the cotton gin made into such a massive, marketable world product, is what made the cotton boom boom.

岛上的居民想大规模种植但没有成功,因而海岛棉,这种粗绒棉,逐渐成为了棉花产业的主流,轧棉机的发明成为了种可大量生产,且有利可图的产品,也因而棉花产业越来越兴盛

耶鲁公开课 - 美国内战与重建课程节选