An eight-week-old embryo is only an inch long.
一个8周大的胎儿仅1英寸长。
The sex of the embryo is predetermined at fertilization.
胚胎的性别早在受精时就决定了。
The mother provides the embryo with nourishment and a place to grow.
母亲为胎儿提供营养和一个生长的地方。
A salamander embryo can attract algae inside its tissues and cells.
蝾螈胚胎却会吸引藻类进入组织和细胞。
For example, parents could have one embryo implanted in the mother's womb and store its identical siblings indefinitely.
例如，父母可以将一个胚胎植入母亲的子宫，无限期地储存同卵双胞胎。
The pause of the development of an embryo has more benefits for preparing it to avoid the harsh times than for competing with its siblings.
暂停胚胎的发育比与其兄弟姐妹竞争更有利于使它做好准备以避免艰难时期的到来。
This allows her to freeze the development of an embryo during times of drought and food shortage until the offspring in the pouch is able to leave.
这使她能够在干旱和食物短缺时暂缓胚胎的发育，直到育儿袋里的后代能够独立生活。
This led them to believe that the cells in the early embryo are undetermined in the sense that each cell has the potential to develop in a variety of different ways.
这使他们相信早期胚胎中的细胞是不确定的，因为每个细胞都有可能以各种不同的方式发育。
Among other benefits, this allows her to freeze the development of an embryo during times of drought and food shortage until the offspring in the pouch is able to leave.
在其他好处中，这使她能够在干旱和食物短缺时期冻结胚胎的发育，直到育儿袋中的后代有能力自己离开。
Because current federal law already forbids the use of federal funds to create embryos for research or to knowingly endanger an embryo 's life, NBAC will remain silent on embryo research.
因为现今的联邦法律已经禁止使用联邦基金克隆胚胎用于研究或者有意地威胁胚胎的生命，NBAC在胚胎研究上将保持沉默。
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。
The idea already existed in embryo in his earlier novels.
这个想法在他早期的小说中已初见端倪。
The chick embryo proper comes from a very small region resting on the yolk.
小鸡胚胎本身来自于蛋黄上的一个非常小的区域。
Useable embryo recovery was significantly low in ewes of corpora lutea degradation.
在黄体降解的母羊中，可用的胚胎恢复率非常低。
PGC from genital ridge and mesenterium of human embryo was incubated on fibroblast feeder layers for subculture.
从人胚胎生殖嵴、肠系膜中消化分离的原始生殖细胞，将其接种在人子宫内膜成纤维细胞饲养层上传代培养。
The goat embryo re-acted the process of the system evolution, which passed through pronephros, mesonephros and metanephros.
山羊胚胎重新反应了系统进化的过程，该过程通过前肾，中肾和后肾。
他所用的是小鸡胚胎。
'We were thrilled, ' she said. 'One embryo had survived.
“我们非常激动，”她说，“一个胚体已经存活了，我等不及要做妈妈了。”
During development of an embryo, cells proliferate and organs grow.
在胚胎发育过程中，细胞会发生增殖，然后器官形成。
The technique essentially reverts mature cells to an embryo-like state.
这项研究其实就是将成熟的细胞返祖，变成类似于胚胎状态的细胞。
As the embryo develops, the cell rolls downhill into a series of branching valleys.
随着胚胎的发育，细胞这个石块也就从山顶上往下滚，随着地势分支进入不同的峡谷。
But this study is the first to show that the algae actually inhabit the embryo itself.
但是这个研究第一次揭示了藻类确实在胚胎内生活。
But they are difficult to make and require the use of an embryo or cloning technology.
但是制造他们是很困难的，而且需要使用胚胎或者是克隆技术。
But the risks of human embryo mapping are too great to even consider performing it.
不过人体胚胎成像的风险巨大，付诸实施根本不容考虑。
The more you look at Ida the more you can picture, as it were, the primate in embryo.
你越端详艾达，就越能想像萌芽中的灵长类动物，艾达可以说就是萌芽中的灵长类动物。
Unlike embryonic cell cells, cord blood cells do not involve the destruction of an embryo.
与采集胚胎细胞不同，采集脐血细胞不会破坏胚胎。
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。
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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