原哺乳动物

The five kinds of male germ cell cytogenetic assays used to detect genotoxicity of ani-mal drugs to each spermatogenetic stage of male germ cells,such as spermatogonia, primary spermatocytes, secondary spermatocytes,spermatids and spermatozoa,had beensystematically studied.

本文系统地研究了适合我国国情的检测兽药对哺乳动物精原细胞、初级精母细胞、次级精母细胞、精细胞和精子等各个发生阶段雄性生殖细胞遗传毒性的5种测定方法，并首次为国产阿维菌素安全性毒理学评价提供了系统的雄性生殖细胞遗传毒性资料。

Any of several nocturnal, burrowing, egg-laying mammals of the genera Tachyglossus and Zaglossus of Australia, Tasmania, and New Guinea, having a spiny coat, slender snout, and an extensible sticky tongue used for catching insects.

针鼹任一种夜间活动的针鼹属和原针鼹属的穴居卵生哺乳动物，生活在澳大利亚、塔斯马尼亚和新几内亚，外皮带针状物，吻细长，舌带粘液并可伸缩，可用来捕获昆虫

Native Americans retain some hunting rights and are exempt from some laws as part of Indian treaties and otherwise under federal law —examples include eagle feather laws and exemptions in the Marine Mammal Protection Act .

美洲原住民保留一些狩猎权，并从一些法律豁免条约，作为印度的一部分，否则根据联邦法律，例子包括：老鹰羽毛法律和海洋哺乳动物保护法的豁免。

These crags, called nunataks, may appear barren, but biologist David Hik, the skier at far right, has discovered that collectively they harbor hundreds of species, from delicate alpine forget-me-nots to foraging mammals.

这些被称之为&冰原岛峰&的峭壁看起来了无生机，但生物学家大卫却发现这里孕育着从脆弱的阿尔卑斯勿忘我到食草类哺乳动物的数百种生物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。