So how might the algae enter the embryos?

那么水藻到底是如何进入胚胎里的呢？

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And the embryos bask in the oxygen given off by the algae.

胚胎也因为藻类产生的氧气而受益。

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A likely moment occurs as the embryos' nervous systems begin to form.

有可能是在胚胎的神经系统开始形成的时候。

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Scientists also studied eggs from the frogs to learn about the development of fertilized eggs into embryos.

VOA: special.2010.06.29

Those are obvious what the differences are, embryonic stem cells are derived from embryos .

这些名称就明确揭示了它们之间的区别,胚胎干细胞是源自于胚胎

耶鲁公开课 - 生物医学工程探索课程节选

stem cell research can go on without the ethical dilemma provided by killing embryos.

干细胞研究者可以免受由于杀死胚胎而带来的道德困境。

干细胞和伦理 - SpeakingMax英语口语达人

Exactly the same technique is being used to "tissue type" the embryos for a potential match.

BBC: Q&A: 'Designer baby' refusal

Cloning cattle has proven equally difficult: About 90 percent of the embryos die in the first trimester.

CNN: Health - House members open hearings on human cloning

However advocates of the new technique say that the embryos created from this technique could never become viable human beings.

BBC: Embryonic stem cells: Advance in medical human cloning