| 单词 | amniotic sac |
| 释义 | amniotic sac (once / 695254 pages) n WORD FAMILY amniotic sac USAGE EXAMPLESHumans begin life in the womb germ-free, developing within the sterile amniotic sac isolated from essential microbes. Wall Street Journal(Oct 10, 2016) They shared the same amniotic sac and placenta in a rare birth condition called monoamniotic, or “mono mono.” Washington Times(May 11, 2015) My doctor suggested we break the amniotic sac, which tends to hurry things along, and I agreed. Washington Post(Jan 05, 2015) n thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) Syn|Hyper amnion, amnios sac a structure resembling a bag in an animal |
| 随便看 |
|
英语词典包含147318条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。