查询词典 Mammals

Any of various aquatic, carnivorous mammals of the families Phocidae and Otariidae, found chiefly in the Northern Hemisphere and having a sleek, torpedo-shaped body and limbs that are modified into paddlelike flippers.

海豹：任一种海豹科和海狮科的海栖食肉类哺乳动物，主要生活在北半球，有光滑鱼雷形的躯体和已演化为桨状的鳍

Seal Any of various aquatic, carnivorous mammals of the families Phocidae and Otariidae, found chiefly in the Northern Hemisphere and having a sleek, torpedo-shaped body and limbs that are modified into paddlelike flippers.

海豹：任一种海豹科和海狮科的海栖食肉类哺乳动物，主要生活在北半球，有光滑鱼雷形的躯体和已演化为桨状的鳍

Any of various herbivorous aquatic mammals of the genus Trichechus, having paddlelike front flippers and a horizontally flattened tail and found in warm coastal waters of Florida, northern South America, West Africa, and the Caribbean.

海牛一种海牛属食草性水生哺乳动物，长有蹼状前鳍，居中扁平的尾巴，产于美国佛罗里达州、南美洲北部、西非和加勒比海地区海岸温暖的水域中

Results Among 15 species of wild animals in Guangxi,the SARS-CoV Ab positive rate are 22.2% for birds,20.0% for reptiles,and 0% in mammals,respectively; no SARS RNA was detected from pharynx and swabs samples of 99 domesticated Paguma larvata.

结果 15种野生动物中鸟类及爬行类动物血清的SARS冠状病毒抗体阳性率分别为22.2%和20.0%，哺乳类动物SARS冠状病毒抗体阳性率为0，人工养殖的果子狸咽拭子及肛拭子标本未检出SARS冠状病毒核酸。

According to the fauna compositions of mammals, 49 species belong to the oriental realm, about 71.01%, 11 species to the palaearctic realm, about 15.94%, and 9 species are widespread species, about 13.05%.

从动物区系成分来看，南方类型49种，占总种数的71.01%；北方类型有11种，占总种数的15.94%；季风型和广泛分布型9种，占总种数的13.05%。

The characteristic Palaeocene faunaseems to have come and gone with the ancestors of modern mammals still skulking unchanged in their burrows.

那些独特的古新代的动物群一定是跟随着现代哺乳动物的老祖宗跑到巢穴里享受着偷欢的情趣，以至自身丝毫未变。

It is characterized paleontologically by the evolution and abundance of mammals, advanced mollusks, and birds, paleobotanically, by angiosperms.

新生代在古生物学和古植物学上的特点是哺乳动物、先进的软体动物和鸟类以及被子植物的发展，数量丰富。

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

The difference in δ 13 C values (2 88‰±0 31‰) between upland buzzards and small mammals was much larger than the differences reported previously, 1‰-2‰, and showed significant difference, while 1 31‰± 0 34‰ between upland buzzard and passerine bird species did not differ from the previously reported trophic fractionation difference of 1‰-2‰.

基于碳同位素的分馏模式(即动物和它食物之间稳定性碳同位素分馏在 1‰～ 2‰之间)，我们推断经大规模灭鼠后，大的食性发生了较大变化，其食物主要来源于高寒草甸的雀形目鸟类，而非原来的小型哺乳类。

Of or relating to certain hoof ed mammals,such as horses and rhinoceroses,of the order Perissodactyla,that have an uneven number of toes.

属于或关于某种带蹄哺乳动物的，如马和犀牛，有奇数个脚趾的

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。