两栖类

Annexin B1 and arthropod formed an independent branch in the species phylogenetic tree; nemathelminth, plant, Ayes and vertebrate formed a branch; pprotozoa, cnidaria, amphibia and chordate formed another branch.

在物种进化上，Annexln B1和节肢动物为1支，新杆线虫、植物、鸟类和脊椎动物为1支，原虫、腔肠动物、两栖类和脊索动物为1支。

Environmental Protection Agency, about 40 percent of American freshwater fish and amphibian species, including this red-sided dace, are classified as being at risk.

根据美国环境保护法，约有40％的美国淡水鱼和两栖类动物，包括这种红边鱼被认为是一种易受攻击的风险鱼类。

Second earliest fossil amphibian ever found; of the Devonian; found in Greenland.

于格陵兰所发现的稍晚于早期的泥盆纪两栖类化石。

Froggy is just like any other amphibian: He wants to bask in warm sunlight all day, sleep on a cool lily pad at night and eat his fill of insects.

froggy就像任何其他两栖类动物：他要享受在温暖的阳光，所有天，睡在酷百合垫在晚上吃，他填写的昆虫。

Froggy's adventures - Froggy is just like any other amphibian: He wants to bask in warm sunlight all day, sleep on a cool lily pad at night and eat his fill of insects.

froggy的冒险-f roggy就像任何其他两栖类动物：他要享受在温暖的阳光，所有天，睡在酷百合垫在晚上吃，他填写的昆虫。

In the course of evolution, when life emerged from the sea in the form of amphibia, a general chemical-sensitive system likely separated into two anatomically distinct but functionally united mechanisms to take into account the chemical information occurring in two different environments, one inside the body—taste or gustation—and one outside—smell or olfaction.

在进化的过程中，当生命以两栖类的形式从海洋里出现时，可能这一种主要的化学感应系统就分成了两种在解剖学上独立但功能上联合的器官。这种器官用来通过两种不同的环境分析化学信息。一种是在分析体内环境的，这就是味觉。另一种分析体外环境的，这就是嗅觉。

Trained as a molecular biologist in amphibian development, Melton began the work he pursues today: trying to find a way to make insulin-producing cells by using stem cells.

作为一个在两栖类进化训练有素的分子生物学家，Melton开始了他现在所进行的工作：试图发现一种方法使用干细胞制造分泌胰岛素的细胞。

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 vertebrate s.

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

Silurian'.'' and before the Mississippian or Carboniferous Period, and characterized by the appearance of forests and amphibians.

处于志留记之后，密西西比纪或石炭纪之前，森林和两栖类的出现是其特征

The early embryonic development of Rana rugulosa was studied at water temperature of 18～23℃.The course, from its fertilized egg stage to operculum completely closed stage, may be divided into 25 stages,which totally take about 126 hours.

无尾两栖类的胚胎发育在胚胎学、发育生物学等学科的研究中有着重要意义，因而有关的研究国内外均有报导，Shumway（1940）详细研究了豹蛙的发育，并提出了较系统的发育资料［1］，故而被国内外许多教材加以采用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。