英语词汇placental mammal是什么意思，placental mammal的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	placental mammal
释义	DEFINITIVE EXAMPLES 权威例句〔chorion〕The outer membrane enclosing the embryo in reptiles, birds, and mammals. In placental mammals it contributes to the development of the placenta.绒毛膜：在爬行类动物、鸟类及哺乳类动物中包含胚胎的外膜，在有胎盘哺乳动物中与胎盘的发育有关美国传统〔eutherian〕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美国传统
随便看	size for size for size fraction size grader size grading size jigging screen size mark size marking size milk size of a fillet weld size of anode size of common block size of grain size of input size of it size of memory size of number size of product size operation size phrase Size Picture size picture size preparation size preparationroom size press

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。