They're trying to achieve satisfaction through their mouth of a sort they didn't get in this very early stage of development.
他们想通过这种口腔运动,来获得本该在口腔期获得的满足感。
The next time we see some development in how this New Testament starts coming about is around the middle of the second century.
下节课我们将会说到,新约出现于主后第二世纪中期。
This surface layer thickens at an early stage in a mouse after 8 days of development.
发育8天后,老鼠早期胚胎的,外胚层开始增厚。
Even the development of this theory of absolute rule is in response to the rise of these territorial states like Spain, and France, and Russia later.
绝对主义理论的发展,是与领土国的兴起相呼应,像西班牙,法国,以及后来的俄国
In this case it's a much more visceral kind of development.
让他认识到了。
You'll read more about it in the Peter Gray textbook and more about it in The Norton readings on development, but just to raise this as an interesting area of debate.
你会在彼得·格雷的教材,以及诺顿读本的发展心理学部分,阅读到更多该方面的内容,我说这个只是想将此作为,一个有趣的辩论内容
I want to say a little bit about the cost of vaccines because this is a part of what makes it difficult to accomplish what's usually our goal in a vaccine development, which is deliver the vaccine to every population in the world.
我想谈谈关于疫苗的成本,因为这是令我们的疫苗发展目标,无法得以实现的困难之一,这个目标就是将疫苗送至世界上每一个人
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