This is Scientific American's 60-Second Science, I'm Steve Mirsky. Got a minute? A strain of mutant mice groom compulsively till they seriously injure themselves. The condition is considered a good animal model for OCD, and its similar to the human d

发表于:2018-12-24 / 阅读(54) / 评论(0) 分类 Scientific American(五)月

Archaeologists in Peru have discovered the nearly 500-year-old skeleton of a man who died in a surprisingly modern way, from a gunshot wound to the head. A team of experts believes the man is the first documented victim of a shooting in the new world

发表于:2018-12-30 / 阅读(89) / 评论(0) 分类 国家地理2007年

We use those in my field of bone marrow transplantation. 我们把这些干细胞用于骨髓移植领域。 Geron, just last year, started the first trial using human embryonic stem cells to treat spinal cord injuries. 杰龙去年开始第一次尝试

发表于:2019-01-03 / 阅读(45) / 评论(0) 分类 TED演讲科学篇

This is Scientific American's 60-Second Science.I'm Steve Mirsky. Got a minute? Hi. Im running. Im also telling some ofmy stem cells what to do right now. Well, I probably am, based on a new study with mice. We have what are called mesenchymal stemce

发表于:2019-01-08 / 阅读(82) / 评论(0) 分类 Scientific American(九)月

奇葩事儿天天发生,愣是把小伙伴们吓成了宝宝。英语如何表达吓死本宝宝了? 1. Startle sb out of sth 这个短语意指把人吓得魂飞魄散, sth可以是one's wits,senses,或者mind,表示被吓得没了知觉

发表于:2019-01-17 / 阅读(25) / 评论(0) 分类 英语口语

Voice 1 Thank you for joining us for todays Spotlight program. Im Ruby Jones. Voice 2 And Im Ryan Geertsma. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice

发表于:2019-02-19 / 阅读(42) / 评论(0) 分类 环球英语 Spotlight