1.
The nascence of that kind of animal is unknown.
那种动物的起源不为人知。
2.
THE ORIGIN AND SYSTEMATICS OF BRYOZOA --a new synthsis on morphological and molecular evidence
苔藓动物的起源与系统发生研究进展——形态学和分子生物学的证据
3.
These discoveries have raised new questions concerning the origin and distribution of early mammals.
这些发现提出了有关早期哺乳动物的起源与分布的新问题。
4.
The origin of vertebrates and their ancestry are problems still obscured by too few facts.
脊椎动物的起源和它们的始祖问题，由于事实太少仍然不很清楚。
5.
a scientific theory of the origin of species of plants and animals.
动植物种类起源的科学理论。
6.
Be at the bottom of sthbbe the basic cause or originator of sth
是某事物的起因或根源
7.
The Origin of Species
《物种的起源》(达尔文著)
8.
a rope with weights attached to the ends; is thrown to entangle the legs of an animal; of South American origin.
一种头上有重物的强子；用来投掷来缠绕动物的腿部；起源于南非。
9.
a hypothetical organic phenomenon by which living organisms are created from nonliving matter.
一种认为动植物起源于无生命有机物的假想有机现象。
10.
Economics-based Thinking from Crack Down on Illegal Activities of Destroying Wildlife Resources in Guangdong Poovince;
由广东打击破坏野生动物资源违法犯罪活动引起的经济学思考
11.
Therefore, it has the prominent position in the origin and evolutionary history of organisms. Perhaps the star-like organism represents the early types of coelenterate with original tentacles.
而腔肠动物的出现标志着真后生动物的开始,在生物起源演化历程上占据着极其关键的位置。
12.
Cultural evolution:universality in animal culture and uniqueness in human culture
文化的起源——动物文化的普遍性与人类文化的独特性
13.
Nearly all the major groups of animals around today had their start in that globe-encompassing outbreak of life.
当今主要的动物种群几乎都起源于那次全球性的生命突变。
14.
The point at which something comes into existence or from which it derives or is derived.
起源事物开始存在或起源或取得的始点
15.
Worked with state and federal agencies to conduct trace the origin and distribution of potentially infected animals.
与州和联邦机构一起工作追踪潜在感染动物的源头和传播
16.
To Explore the Initiation of Hepatocellular Carcinoma Studied by Sex-crossed Bone Marrow、Liver Transplantation in Vivo;
性别交叉骨髓、肝移植探讨肝癌起源的动物实验研究
17.
ON THE THEORY OF CATHAYSIAN FLORA IN RELATION TO THE ORIGIN OF THE FLOWERING PLANTS
华夏植物区系理论与有花植物的起源
18.
any incitement to action.
任何激起行动的刺激物。