单词：vesico-umbilical ligaments
单词：vesico-umbilical ligaments 相关文章
Why Are Some People Double-Jointed? Can you bend your thumb backwards until it touches your wrist? If you join your hands behind your back, can you lift them over your head without letting go? If you can, you might be what some people call double-joi
英语听力文摘 English Digest
Can you bend your thumb backwards until it touches your wrist? If you join your hands behind your back, can you lift them over your head without letting go? 你是否能将大拇指向后弯曲直至其触碰到手腕部位？你将双手在背后紧握
2018年NPR美国国家公共电台2月
Why Is Gravity Good For Us? When astronauts return from long missions in space, their exit from the spacecraft is usually hidden from public view. This is because after several months in weightless conditions, things we usually take for granted, such
英语听力文摘 English Digest
By David Byrd Washington 02 February 2006 Daron Rahlves He is a three-time medalist at the World Alpine Ski championships. He has beaten the vaunted Austrians on their own course at Kitzbuehel, but Ol
2006年VOA标准英语（二月）
Study: Cleaning Umbilical Cord Saves Lives Simple use of an inexpensive disinfectant could save hundreds of thousands of newborn lives each year. That's the conclusion of recent studies from South Asia. The umbilical cord is usually cut right after b
VOA标准英语2012年(二月)
By Robert Raffaele Washington 06 May 2008 Medical researchers say a simple decision by expectant mothers can mean the difference between life and death for thousands of people. Blood from umbilical cords has been used in life-saving transplants for p
VOA标准英语2008年（五月）