美国科学60秒-SSS 2015-06-08
时间：2019-01-20 作者：英语课 分类：2015年Scientific American(六)月
One an old route humans took when they first migrated from Africa into Europe seems that they might have marched the path. Not like constant grettle who consciously left bright chromes, ancient humans ate as they tracked and they are appeared to have chark the side of packaging for some of their slimy assesstments. Snails 2, conventional wisdom has been that humans initially 3 traveled from Africa to the near East then to up around the Mediterranean 4 through Lavernun before heading into Europe some 40 to 50 thousands years ago. But recently, some scientists of DRI's that humans made it to Europe first and then headed East. Now there is more support for the old view that humans travel through the Lavant on the way to the Europe in the form of the shells of adbol marine 5 snails. The study is on the proceedings 6 of the National Academy of Sciences. Researchers evaluated shells from an archaeological sight dated to the upper palliate ethic 7 in Lavenon. The shells were mostly intact, except the taper 8 pointy tip have been removed, most likely for easier access to the medium side. The scientists calculated the age of the shells by a variety of methods and they found out that the snails dated back almost 46 thousands years. The earliest evidence of modern human remains 9 in Europe seems to be no more than 45 thousands years old. The snail 1 evidence that adds weight to the hypothesis that ancient people passed through the Lavant on their way to Europe and not at the snail's pace either.
- Snail is a small plant-eating creature with a soft body.蜗牛是一种软体草食动物。
- Time moved at a snail's pace before the holidays.放假前的时间过得很慢。
- I think I'll try the snails for lunch—I'm feeling adventurous today. 我想我午餐要尝一下蜗牛——我今天很想冒险。 来自《简明英汉词典》
- Most snails have shells on their backs. 大多数蜗牛背上有壳。 来自《简明英汉词典》
- The ban was initially opposed by the US.这一禁令首先遭到美国的反对。
- Feathers initially developed from insect scales.羽毛最初由昆虫的翅瓣演化而来。
- The houses are Mediterranean in character.这些房子都属地中海风格。
- Gibraltar is the key to the Mediterranean.直布罗陀是地中海的要冲。
- Marine creatures are those which live in the sea. 海洋生物是生存在海里的生物。
- When the war broke out,he volunteered for the Marine Corps.战争爆发时，他自愿参加了海军陆战队。
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- They instilled the work ethic into their children.他们在孩子们的心中注入了职业道德的理念。
- The connotation of education ethic is rooted in human nature's mobility.教育伦理的内涵根源于人本性的变动性。
- You'd better taper off the amount of time given to rest.你最好逐渐地减少休息时间。
- Pulmonary arteries taper towards periphery.肺动脉向周围逐渐变细。