结缔组织骨

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

发表于:2018-12-05 / 阅读(41) / 评论(0) 分类 英语听力文摘 English Digest

From VOA Learning English, this is the Health Lifestyle report. You may not realize it, but your bones are living tissue. And that tissue is always breaking down and re-growing. When the growth of new bone tissue does not keep up with the loss of old

发表于:2018-12-07 / 阅读(27) / 评论(0) 分类 2017年VOA慢速英语(五)月

When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

发表于:2018-12-16 / 阅读(213) / 评论(0) 分类 VOA标准英语2011年(三月)

What did a dinosaur look like? By Linda Baxter Can we believe what we see? Dinosaur art has a long history. Life-size models in natural history museums, paintings and drawings, children's toys, and of course, the recent spate of computer generated fi

发表于:2019-01-02 / 阅读(91) / 评论(0) 分类 英语音频杂志

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(82) / 评论(0) 分类 60秒科学

No bones about it. 意思是:真实的,诚恳的(truly, sincerely or exactly),也就是 to make no bones about it.(bone 要加 s, it 是指 something)例如: His wife is beautiful;no bones about it.(他的太太真是很漂亮)Mr.

发表于:2019-02-06 / 阅读(41) / 评论(0) 分类 实用英语