哺乳动物的

In 1843, Friedrich Engels saw an egg of a duckbill in Engla 北美文学网 nd. People told him that it was a mammal animal from Austra 中 lia. He broke into laughter after hearing it and said:"All 说 th 北美枫44 e mammal animals were viviparous. The duckbill was oviparous, so it could not be a mammal animal".

1843年恩格斯在英国看到一只鸭嘴兽的蛋，人们告诉他，这是澳大利亚的一种哺乳动物，恩格斯听后哈哈大笑说："哺乳动物都是胎生的，鸭嘴兽是卵北美枫上生的，因此 6中肯定不是哺乳动 dj 物。"

Any of various warm-blooded vertebrate animals of the class Mammalia, including human beings, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young.

哺乳动物任一种包括人类在内的哺乳动物纲的温血脊椎动物，其特点是皮肤上有一层毛，雌性具有养育幼崽的能产生奶汁的乳腺

The present study is to culture otocyst cells in fetal, cochlear sensory epithelial cells of neonatal and mature respectively in vitro with refinement of culture media and techniques. Immunocytochemistry and Bromodeoxyuridine labeling are used to detect properties and mitotic status of cultured cells. With the observations about proliferation and differentiation in cultured cells, we want to find the origin of regenerative cells and to understand how these progenitors proliferate and differentiate.

本研究分别对胎鼠听囊、新生鼠听觉上皮和成年鼠听觉上皮用自然培养方法进行体外培养，并应用免疫细胞化学方法，对培养细胞进行染色标记和观察，系统了解哺乳动物听觉细胞发生、发育过程，以及这些细胞在体外的增殖和分化过程，旨在了解哺乳动物听觉细胞听觉上皮感觉细胞的来源，发现细胞生长的前体细胞。

Serious attention to the trypanosomes of mammals was drawn by the work of Timothy Lewis on the parasite of Indian rats, the importance of which was realized after Griffith Evans (1880) discovered the pathogenic trypanosome in horses and camels in India Trypanosoma evansi

Timothy Lewis对印度老鼠的寄生虫的研究引起了人们对于哺乳动物锥虫病的严重关注。Griffith Evans (1880)在印度发现马和骆驼身上的致病性锥虫之后，人们才认识到了哺乳动物锥虫病的重要性。

People told him that it was a mammal ''.'animal'.'' from Australia. He broke into laughter after hearing it and said:All the mammal animals were viviparous.

兽'。''的蛋，人们告诉他，这是澳大利亚的一种哺乳动物，恩格斯听后哈哈大笑说：哺乳动物都是胎生的，鸭嘴''。

This factor is highly conserved in mammalian animals and only one heterozygous LIF mutation was reported to cause the infertility of women.

LIF在所有的哺乳动物中都具有高度的保守性，某些氨基酸在不同物种中保持不变。 LIF中29位氨基酸在所有的哺乳动物中都是Q。

Part I. Molecular Characterization of HIV-1 genome by using fission yeast as a model systemAs a fungus, S. pombe has many features mimicking mammalian cells. Most of proteins have same functions in S.pombe cells and mammalian cells.

第一部分以S.pombe为模型对HIV-1全基因组的研究 S.pombe是与哺乳动物细胞非常相似的一种真菌，各种真核细胞蛋白在S.pombe细胞和哺乳动物细胞中的功能基本相似。

Ocean cradlers Critters like sea lions needing a little extra help will now get it, at the M arine M ammal C enter's we去掉 re vamped 32 million dollar hospital and emergency room in northern California.

像海豹那样的海洋生物需要一些善意的帮助才能够存活下来。在海洋哺乳动物中心我们花费三千二百万美元用于修缮北加利福尼亚州的动物医疗室和急救室。都将在加利福尼亚州北部的海洋哺乳动物中心得到额外的帮助。中心耗资320万美元，改建了医院和急救室。

Nothing much then happened for 50m years when, all of a sudden, the placentals (or, at least, those with surviving descendants) split into four so-called superorders.

之后的五千万年内没有任何新奇的事发生，就在这时，胎盘哺乳动物(或者说是那些有后代存活的哺乳动物)突然之间分化为四种所谓的生物总目。

A new spalacotheriid mammal preserved with a complete postcranium and a partial skull has been discovered from the Yixian Formation1, 2, 3 of Liaoning, China. Spalacotheroid symmetrodonts4, 5, 6, 7, 8, 9, 10, 11 are relatives to modern therians (combined group of marsupials and placentals) and are characterized by many skeletal apomorphies of therians.

中国的义县化石产地在过去十年时间里已经出产了一些最为重要的哺乳动物化石，比如说一系列长羽毛的恐龙化石，并且还在继续出产对关于早期哺乳动物演化的传统观点形成挑战的化石。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。