This is because of the somites at the back of the embryo that “somewhat resemble teethmarks in a chewed substance.”

这是因为胚胎背部的体节“有点像咀嚼过物质上的齿痕”。

属类：人文学科-宗教-古兰经解说

The middle section of the digestive tract in a vertebrate embryo from which the ileum,jejunum,and portions of the duodenum and colon develop.

中肠脊椎动物胚胎中消化道的中间部分,回肠、空肠、部分十二指肠和节肠均属此部位

属类：综合句库--

The middle germinal layer of an early embryo ,consisting of undifferentiated cells destined to become the mesoderm.

中胚层早期胚的中间胚芽层,由最终将发育成中胚层的未分化细胞组成

属类：综合句库--

The middle zone of the mesoderm of a chordate vertebrate embryo ,from which excretory tissue develops.

中胚叶节脊索类脊椎动物胚胎的中胚层的中间部分,最终会发育成排泄组织

属类：综合句库--

The second of the three excretory organs that develop in a vertebrate embryo ,becoming the functioning kidney in fish and amphibians but replaced by the metanephros in higher vertebrates.

中肾在脊椎动物胚胎内发育而成的三对排泄器官中的第二对,作为功能肾存在于鱼类和两栖类体内,但在更高级的脊椎动物中则发育成后肾

属类：综合句库--

The central portion of an ovule in which the embryo sac develops;the megasporangium.

珠心胚珠的中心,胚芽囊在此发育;大孢子囊

属类：综合句库--

Uterus (or womb):Inverted-pear-shaped organ of the female reproductive system, in which the embryo and fetus develop during pregnancy.

子宫:女性生殖系统的肌性器官,呈倒梨形,位于膀胱与直肠间,功能为孕育胎儿。

属类：化学及生命科学-医学-生理与解剖

A leaf of the embryo of a seed plant,which,upon germination either remains in the seed or emerges,enlarges,and becomes green.

子叶种子植物胚的叶片,在萌芽过程中,它或者保持在种子里或者出来,变大并变绿

属类：综合句库--

Scientists have been cloning frogs and mice since 1952, but Dolly was the first animal to be cloned from the cells of an adult, rather than an embryo or foetus.

自1952年以来,科学家一直在克隆青蛙和老鼠,但多利是第一只从成年动物的细胞中克隆出来的动物,而不是发育自胚胎或胎儿。

属类：社会文化-英语文摘-

Miscarriage (or spontaneous abortion):Spontaneous expulsion of an embryo or fetus from the uterus before it can live outside the mother.

自然流产:胚胎或胎儿能在母体外独立生存之前即从子宫自动排出。

属类：化学及生命科学-医学-