The little tadpole about the size of a sesame seed is now made up of three layers: the ectoderm mesoderm and endoderm.

芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。

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The little tadpole, about the size of a sesame seed, is now made up of three layers: the ectoderm, mesoderm and endoderm.

芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。

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Since the paper was published a few weeks ago, Ornstein has attempted to seed serious discussions on specialist websites, with little success.

自从该文章在数周前发表以来，奥恩·斯坦一直试图在专家网站上引起一场认真的讨论，但收效甚微。

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Families can also take a little seed pot away with them so they can take a piece of Tredegar House home.

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Even just a tiny bit of cheating, a little white lie, can be the seed for a lot of lies later on.

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Little flashes where he builds his credibility and maybe plants a seed of doubt.

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