创始者突变是一类引起疾病的基因突变，每一种都源自其自身祖先的“创始者”。

Founder mutations are a class of disease-causing genetic mutations, each derived from its own ancestral "founder" in whom the mutation originated.

youdao

《无师自通的写作》这本书向我介绍了一类思维区别和一种写作方法，对我的写作有极大帮助。

The book Writing Without Teachers introduced me to one distinction and one practice that has helped my writing processes tremendously.

youdao

对植物的研究已经发现了一种叫做寡糖的新一类调节分子。

Studies of plants have now identified a new class of regulatory molecules called oligosaccharins.

youdao

Another family is receptor tyrosine kinases, I'll show another picture in a moment that tells you more about what a kinase is, but a kinase is basically an enzyme that can add a phosphorous to another molecule.

另一类是酪氨酸激酶受体,马上我给你们看另一张图,这张图会更详细地告诉你们激酶是什么,激酶是一种能够,向其他分子上添加磷酸基团的酶

耶鲁公开课 - 生物医学工程探索课程节选

an event or something more abstract like a thought.

对于一种活动，或者像想法一类更为抽象的东西，“is there”也可以胜任。

Is there 课堂 - SpeakingMax英语口语达人

So we're to assume we can get to any piece of data, any instruction in constant time, and the second assumption we're going to make is that the basic primitive steps take constant time, same amount of time to compute. Again, not completely true, but it's a good model, so arithmetic operations, comparisons, things of that sort, we're all going to assume are basically in that in that particular model.

因此如果我们假设在恒定的时间内,我们可以取得任何一块数据,任何一种数据结构的话,我们要做的第二个假设就是,基本的原始操作计算花费的时间是恒定的,这个假设也不是完全正确的，但这个模型其实挺不错的，因此算法操作，比较，这一类的事情，我们在这个特定的模型中都假设是基本的,操作，花费的时间是恒定相同的。

麻省理工公开课 - 计算机科学及编程导论课程节选