胎盘哺乳动物

The modified blastula that is characteristic of ''.

胚泡转化的囊胚，为胎盘哺乳动物的特征

The modified blastula that is characteristic of placental mammals.

胚泡转化的囊胚，为胎盘哺乳动物的特征

Distance values between two sequences were calculated using the molecular data of complete mitochondrial genomes derived from 20 Eutherian animals, then the distance matrix was obtained.

选取20种有胎盘哺乳动物，以它们的全线粒体基因组作为分子数据，计算两两之间的LZ复杂性距离，得出距离矩阵。

Generalized extinct mammals widespread during the Jurassic; commonly conceded to be ancestral to marsupial and placental mammals.

一般化的已灭绝哺乳动物，活跃于侏罗纪；普遍认为是有袋动物和有胎盘哺乳动物的祖先。

Monotremes and marsupials are aplacental mammals .

类动物和有袋动物是无胎盘哺乳动物。

Most birds mate by joining their cloacas in a "cloacal kiss"; muscular contraction s transfer the sperm from the male to the female.

但多数鸟类仅以泄殖腔互相接触，藉肌肉收缩而把雄鸟的精子送给雌鸟。有胎盘哺乳动物及多数硬骨鱼无泄殖腔。

Of or belonging to the infraclass Eutheria, a division of mammals to which all the placental mammals belong.

真哺乳亚纲的关于或属于哺乳动物真兽亚纲的一个下纲，包括有胎盘哺乳动物

Of or belong ing to the infraclass Eutheria,a division of mammals to which all the placental mammals belong .

真哺乳亚纲的关于或属于哺乳动物真兽亚纲的一个下纲，包括有胎盘哺乳动物

Modern mammals divide into three overarching groups: the placentals, the marsupials and the monotremes (the egg-laying platypus and echidnas).

现代哺乳动物可被划分为三种主要的群体：胎盘哺乳动物(大多数物种都属于这一类，包括人类)、有袋动物与单孔目动物。

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。

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。