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1·Many people object to experimentation on embryos.

许多人反对用胚胎做实验。《牛津词典》

2·There are 24,000 frozen embryos in clinics across the country.

全国各地的诊所里有24000个冷冻胚胎。《柯林斯英汉双解大词典》

3·The paper provides a detailed description of how to create human embryos by cloning.

这篇论文对如何通过克隆制造人类胚胎提供详细的描述。《柯林斯英汉双解大词典》

4·Snake embryos, for example, sprout hind limb buds.

例如，蛇的胚胎会生长出后肢。

5·Early embryos of many species develop ancestral features.

许多物种的早期胚胎具有其祖先的特性。

6·If it is cut in a plane different from the one used by the early investigators, it will not form two whole embryos.

如果在一个不同于早期研究人员所使用的平面上切割，就不会形成两个完整的胚胎。

7·The international trade in semen and embryos from cloned animals created in north and south America and beyond was effectively impossible to police.

在北美，南美以及其他一些地方生产的精子和克隆动物胚胎，其在国际范围内的交易已经无法加以有效监管。

8·Nearly a century ago, biologists found that if they separated an invertebrate animal embryo into two parts at an early stage of its life, it would survive and develop as two normal embryos.

近一个世纪前，生物学家发现，如果他们在无脊椎动物胚胎生命的早期阶段将其分成两部分，它会存活下来并发育成两个正常的胚胎。

9·The most successful groups of land plants are those that evolved methods of fertilized sex cell dispersal that are independent of water and structures that protest developing embryos from drying out.

最成功的陆生植物群体是那些进化出了受精性细胞散布方法的群体，这些方法不依赖于水和防止发育中的胚胎干涸的结构。

10·Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.

果蝇在家中招人讨厌，但却是一个历史悠久的实验对象。通过研究果蝇，科学家们得以揭开胚胎发育的秘密。

胚胎

1·Many people object to experimentation on embryos.

许多人反对用胚胎做实验。《牛津词典》

2·There are 24,000 frozen embryos in clinics across the country.

全国各地的诊所里有24000个冷冻胚胎。《柯林斯英汉双解大词典》

3·The paper provides a detailed description of how to create human embryos by cloning.

这篇论文对如何通过克隆制造人类胚胎提供详细的描述。《柯林斯英汉双解大词典》

4·Snake embryos, for example, sprout hind limb buds.

例如，蛇的胚胎会生长出后肢。

5·Early embryos of many species develop ancestral features.

许多物种的早期胚胎具有其祖先的特性。

晶胚

1·On stem cells, he says he changed his mind in 2004, after a scientist told him there was no moral issue involved because the embryos used in the research would be destroyed anyway.

对于干细胞研究的态度，他说在2004年，某位科学家告诉他这项研究不涉及到道德问题，因为用于研究的晶胚无论如何都将被销毁之后，他的看法有了改变。