巴拉克·奥巴马宣誓就职后施行的第一批政策中，加强对胚胎干细胞医疗研究的限制赫然在列。

One of Barack Obama's first acts as president was lifting the U.S. restrictions on medical research using embryonic stem cells.

youdao

扫描会向一个单词进行累积， 直到结束（或者是行或列的末尾，或者遇到非字母的块），然后将此单词添加到它寻找过程中遍历的所有字母细胞。

The scan accumulates a word until a break (either the end of a row or column, or a non-letter tile) and then adds the word to all the letter cells it found along the way.

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提出这一设想的是纽约西奈山医学院的细胞生物学家伦纳德·奥恩·斯坦和美国宇航局气候模型家伊戈尔·艾列诺夫和大卫·林德。

The scheme has been thought up by Leonard Ornstein, a cell biologist at the Mount Sinai School of Medicine in New York, together with Igor Aleinov and David Rind, climate modellers at Nasa.

youdao

Well, that specialized region - now in this diagram here, this is the axon of one cell, the first cell in a sequence and that axon meets the dendrite of another cell at a special region called a synapse.

图中这里的这一特定区域,是一个细胞的轴突,是这一列中的第一个细胞,而轴突,和另一个细胞的树突,在一个叫做突触的地方相遇

耶鲁公开课 - 生物医学工程探索课程节选