Numerous varieties of personnels conceive in the embryo of time.

无数人事的变化孕育在时间的胚胎里。

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In the embryo stage, chickens actually have a tail, which disappears before the bird hatches.

事实上小鸡在胚胎期是有长尾的，不过在孵化之前就消失了。

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It matters in which plane the embryo is cut.

这关系到胚胎在哪个平面被切割。

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What's shown in this diagram is the progress of the developing embryo as it travels in time, down the fallopian tube.

这张图上显示的,就是胚胎发育的过程,是按照它在输卵管中移动的时间排序的

耶鲁公开课 - 生物医学工程探索课程节选

And unfortunately, in order to get those stem cells, that requires killing the embryo.

而不幸的是，要想得到这些干细胞，就需要杀死胚胎。

干细胞和伦理 - SpeakingMax英语口语达人

There's a change in sort of the shape of the overall embryo as well.

与此同时,胚胎的外形,也有一定程度的变化

耶鲁公开课 - 生物医学工程探索课程节选

Although the father's genetic material is present in the embryo and on the surface of the placenta, the mother's body does not reject it.

BBC: Immune treatment 'cuts IVF failures'

The trick is to persuade such cells to forget what they have become and remember what they (or, rather, their ancestors) once were in the embryo.

ECONOMIST: Human embryonic stem cells

The team was particularly interested in spontaneous mutations: Those that are not present in either parent, so must arise spontaneously in the sperm, egg, or in the embryo.

FORBES: Parental Age, Especially The Father's, Is Linked To Genetic Mutations In The Child