研究主要集中在上皮细胞上，即那些分布在肠道和血管壁的细胞。

The research focused on epithelial cells, the cells that line the gut and blood vessels.

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如果农场不把牛奶调匀，乳脂就会集中在上层，而不会平均分布。

If dairies did not homogenize milk, the cream would be concentrated at the top instead of being evenly distributed.

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过去几年我们的资助计划主要是集中在上海，但今年我们把它扩展到了附近城市。

Our sponsorship program was focused on Shanghai over the past years, but this year we expanded it to include nearby cities.

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The structural moment of concentration on the code for its own sake cannot be avoided, and literature necessarily breeds its own formalism.

集中在代码上的结构瞬间,因为它本身的原因不可避免，文学必要地导致了它自身的形式主义。

耶鲁公开课 - 文学理论导论课程节选

So, the first half of the class is going to be concerned with questions about the nature of death.

所以，课程的前半部分将会集中在,死亡本质的问题上。

耶鲁公开课 - 死亡课程节选

We're going to focus on the simple, salient things could be an instrument, could be an important rhythm.

我们得集中在简单,显著的事物上,有可能是件乐器,有可能是重要的节奏

耶鲁公开课 - 聆听音乐课程节选